DS160 Bosch Manual: A Comprehensive Guide
This manual details the Bosch DS160/DS161 series, high-performance request-to-exit detectors. It covers installation, wiring, configuration, and troubleshooting for secure access control systems, ensuring optimal performance.
What is the Bosch DS160?
The Bosch DS160 is a high-performance request-to-exit (REX) detector, specifically engineered for access control applications where a clear and reliable exit path is crucial. As part of the DS160 Series – which also includes the DS161 (black enclosure variant) – it utilizes passive infrared (PIR) technology to detect motion and signal a request to exit.
This detector is designed to prevent unauthorized exits while ensuring legitimate passage. It’s a key component in security systems, particularly in environments demanding a high level of safety and control. The DS160 features internal vertical pointability and sequential logic input (SLI), enhancing its precision and reducing false alarms.
Available in a light gray enclosure, the DS160 is suitable for a variety of aesthetic environments. It’s commonly paired with compatible control units, power supplies, and locks that meet ULC-S319 listing standards for C-UL listed installations, guaranteeing compliance and reliability within regulated security setups.
DS160 vs. DS161: Key Differences
The Bosch DS160 and DS161 detectors are fundamentally identical in their functionality and technical specifications, sharing the same high-performance request-to-exit (REX) capabilities and utilizing the same passive infrared (PIR) technology. Both models offer programmable fail-safe or fail-secure modes, adjustable timing settings ranging from 0.5 to 64 seconds, and internal vertical pointability for precise detection.
The sole distinction between the DS160 and DS161 lies in their enclosure color. The DS160 is housed in a light gray enclosure, making it suitable for environments where a neutral aesthetic is preferred. Conversely, the DS161 features a black enclosure, offering a more discreet appearance or blending better with darker surroundings.
This cosmetic difference allows for flexibility in installation, enabling security professionals to select the model that best integrates with the existing décor. Functionally, both detectors deliver the same level of performance and reliability for request-to-exit applications.
Intended Use: Request-to-Exit (REX) Applications
The Bosch DS160 and DS161 series detectors are specifically engineered for Request-to-Exit (REX) applications, a critical component of modern access control and security systems. These detectors are strategically positioned on the secure side of a doorway to prevent unauthorized exit while allowing authorized personnel to freely leave a protected area.

REX detectors play a vital role in maintaining security protocols, particularly in environments requiring strict control over egress, such as retail stores, banks, and high-security facilities. They effectively deter “tailgating” or “piggybacking,” where unauthorized individuals attempt to follow authorized personnel through a secure door.
When an individual approaches the exit door with the intention of leaving, the DS160/DS161 detects their motion, signaling the access control system to unlock the door, facilitating a safe and controlled exit. Proper installation and configuration are crucial for optimal performance within these REX applications.

Technical Specifications of the DS160
The Bosch DS160 high-performance request-to-exit detector boasts several key technical specifications crucial for optimal functionality. It utilizes Passive Infrared (PIR) technology, detecting motion based on emitted infrared energy. The detector features adjustable timing settings, ranging from 0.5 seconds to 64 seconds, allowing customization to suit specific application needs.
Regarding coverage, the DS160 offers internal vertical pointability, enhancing its ability to accurately detect movement within the designated exit path. It incorporates Sequential Logic Input (SLI), contributing to its reliable performance within integrated security systems. Power requirements are compatible with standard security power supplies.
The DS160 is available in a light gray enclosure, designed for discreet integration into various architectural settings. It’s also C-UL listed, signifying compliance with stringent safety standards. Furthermore, it’s designed for compatibility with ULC-S319 listed control units, power supplies, and locks, ensuring seamless integration within comprehensive security infrastructures;
Installation Requirements & C-UL Listing
Proper installation of the Bosch DS160 is paramount for reliable performance and adherence to safety regulations. For C-UL listed installations, the detector must be connected to devices also bearing the ULC-S319 listing – encompassing control units, power supplies, and access control locks. This ensures the entire system meets recognized safety standards.

Mounting height and angle are critical; consult the detailed installation guide for precise specifications to optimize coverage patterns and minimize false alarms. Wiring must conform to local electrical codes and the manufacturer’s recommendations, utilizing appropriate gauge wire and secure connections.
The DS160’s C-UL listing signifies that it has been rigorously tested and evaluated by Underwriters Laboratories (UL) to meet applicable safety standards for the US and Canada. This certification provides assurance of product quality and safety. Always verify the C-UL listing mark is present on the device before installation, confirming compliance.
Wiring Diagrams and Connections
The Bosch DS160 utilizes several wiring configurations depending on the desired functionality and integration with the access control system. Key connections include power (typically 12VDC), signal output (REX input to the control panel), and optional tamper switch connections for enhanced security. Detailed wiring diagrams are essential for correct installation and are provided in the official Bosch installation guide.
Sequential Logic Input (SLI) is a notable feature, requiring specific wiring to enable coordinated operation with door locking mechanisms. Proper grounding is crucial to minimize interference and ensure reliable signal transmission. Wire gauge should be appropriate for the distance and current draw, adhering to local electrical codes.
Connections to ULC-S319 listed control units, power supplies, and locks are mandatory for C-UL listed installations. Incorrect wiring can compromise system security and void the listing. Always double-check all connections before applying power, and refer to the diagrams for correct polarity and terminal assignments.
Switch Settings and Configuration
The Bosch DS160 offers versatile configuration options via onboard DIP switches, allowing customization for specific application requirements. These settings control crucial parameters like fail-safe or fail-secure operation, influencing how the detector responds during power outages or system faults; Programmable modes are essential for aligning the detector’s behavior with the overall security strategy.
Adjustable timing settings, ranging from 0.5 seconds to 64 seconds, determine the duration the REX signal remains active after motion detection. This prevents accidental re-entry while allowing sufficient time for safe exit. Careful adjustment is vital to balance security and user convenience.

Internal vertical pointability adjustments further refine the detection zone, minimizing false alarms caused by environmental factors or pedestrian traffic patterns. Proper configuration requires understanding the coverage patterns and anticipated movement within the monitored area. Refer to the installation guide for detailed explanations of each switch function.
Coverage Patterns and Optimal Placement
The Bosch DS160’s effectiveness hinges on understanding its coverage patterns and selecting optimal placement locations. The detector utilizes Passive Infrared (PIR) technology, sensing changes in infrared energy emitted by moving objects. Its field of view is designed for request-to-exit applications, focusing on the egress path.
Optimal placement typically involves mounting the DS160 directly above or adjacent to the door, ensuring a clear line of sight to the anticipated exit route. Avoid obstructions like furniture or signage that could impede detection or create false alarms. Consider pedestrian flow and potential blind spots when determining the mounting height and angle.
The detector’s internal vertical pointability allows for fine-tuning the detection zone, minimizing sensitivity to areas outside the intended exit path. Careful adjustment is crucial for maximizing performance and reducing nuisance alarms. Refer to the provided diagrams in the installation guide for detailed coverage pattern illustrations.
Understanding Passive Infrared (PIR) Technology
The Bosch DS160 and DS161 detectors operate on the principle of Passive Infrared (PIR) technology. This means they don’t emit energy; instead, they passively detect infrared radiation emitted by objects in their field of view. All objects with a temperature above absolute zero radiate infrared energy, and movement causes changes in this radiation.

The DS160’s PIR sensor is designed to detect these changes. When a warm body – typically a person – moves across the sensor’s field of view, it creates a differential in the infrared levels, triggering a detection event. The sensitivity of the sensor is adjustable, allowing for customization based on the environment.
Understanding PIR limitations is crucial; Factors like ambient temperature, air currents, and reflective surfaces can influence performance. Proper installation and configuration, minimizing these external influences, are key to reliable operation. The technology is highly effective for request-to-exit applications due to its ability to reliably detect approaching individuals.

Fail-Safe vs. Fail-Secure Modes: Programming Options
The Bosch DS160/DS161 detectors offer programmable fail-safe or fail-secure modes, providing flexibility to match specific security requirements. Fail-safe mode ensures the door unlocks upon a power failure, prioritizing egress for life safety. This is ideal for applications where allowing exit is paramount, even during an emergency.
Conversely, fail-secure mode locks the door down during a power outage, enhancing security by preventing unauthorized access. This mode is suitable for high-security areas where maintaining a locked state is critical. The choice between these modes is configured via switch settings on the detector itself.
Proper selection depends on a thorough risk assessment. Consider the potential consequences of both a successful unauthorized entry and a blocked exit. The DS160’s programmability allows tailoring the system to the specific needs of the protected area, maximizing both safety and security. Careful consideration of these options is vital for optimal performance.
Adjustable Timing Settings (0.5 sec to 64 sec)
The Bosch DS160/DS161 detectors feature adjustable timing settings, ranging from 0.5 seconds to 64 seconds, offering precise control over the request-to-exit (REX) delay. This flexibility allows customization to suit various door types, traffic patterns, and security protocols. A shorter delay is appropriate for high-traffic areas where quick egress is essential, minimizing inconvenience for authorized personnel.

Conversely, a longer delay is beneficial in environments requiring increased security, providing a greater window for monitoring and response to potential unauthorized access attempts. The timing is configured through onboard DIP switches, enabling easy adjustments during installation or system modifications.
Proper timing selection prevents nuisance alarms and ensures reliable operation. Consider the speed at which individuals typically pass through the doorway and the response time of the connected security system. Fine-tuning these settings optimizes performance and minimizes false triggers, enhancing overall system effectiveness.
Power Supply Compatibility
The Bosch DS160 and DS161 request-to-exit detectors are designed to operate with a wide range of power supplies, but compatibility is crucial for reliable performance and adherence to safety standards. Specifically, for installations requiring C-UL listing, the detector must be connected to a ULC-S319 listed compatible power supply. This ensures the entire system meets stringent safety and performance requirements for life safety applications.

The detectors typically operate on a 12V DC power source, but it’s vital to verify the power supply’s output current capacity. Insufficient current can lead to erratic behavior or complete failure. The power supply should be adequately sized to handle the DS160/161’s current draw, plus any additional devices connected to the same power source.
Using a compatible, listed power supply guarantees proper operation, minimizes the risk of false alarms, and maintains compliance with relevant regulatory standards. Always consult the Bosch documentation and local codes for specific power supply requirements.
Integration with Control Units and Locks (ULC-S319)
Successful integration of the Bosch DS160/DS161 request-to-exit detectors with access control systems hinges on compatibility with ULC-S319 listed control units and locking mechanisms, particularly in C-UL listed installations. This standard dictates specific requirements for fire alarm and access control components to ensure reliable operation during emergencies.
The DS160/161’s output signals are designed to interface seamlessly with these listed control units, allowing for proper monitoring of door status and activation of alarms if necessary. When connecting to locks, ensure they are also ULC-S319 compliant to maintain system integrity. Proper wiring and configuration are paramount; refer to both the DS160/161 installation guide and the documentation for the connected control unit and lock.
Failure to use compatible components can compromise the system’s safety and potentially void its certification. Always prioritize ULC-S319 listed devices for a secure and reliable access control solution.
Troubleshooting Common Issues
When facing difficulties with your Bosch DS160/DS161 detector, begin by verifying the power supply. Insufficient voltage can cause erratic behavior or complete failure. Next, inspect all wiring connections, ensuring they are secure and correctly polarized. False alarms are often linked to improper sensitivity settings or obstructions within the detection zone – adjust settings and clear any potential interference.
If the detector fails to trigger, check the switch settings, confirming they align with the desired fail-safe or fail-secure mode. Verify compatibility with the connected control unit; incorrect programming can prevent proper communication. For unresponsive units, consider testing with a known good power supply and verifying the SLI (Sequential Logic Input) functionality.
Consult the full installation guide for detailed troubleshooting steps and diagrams; If issues persist, contact Bosch Security Systems technical support for assistance.
Enclosure Colors: Light Gray and Black Options
The Bosch DS160 series offers aesthetic flexibility with two enclosure color choices: a standard light gray (DS160) and a sleek black (DS161). This allows for seamless integration into diverse architectural environments, minimizing visual disruption and maintaining a professional appearance. The color selection doesn’t impact the detector’s performance or functionality; both models deliver identical high-performance request-to-exit detection capabilities.
Choosing between the light gray and black options primarily depends on the surrounding décor and desired level of discretion. The light gray blends well with neutral backgrounds, while the black offers a more contemporary and subtle look, particularly in darker settings.
Both enclosure colors are constructed from durable materials designed to withstand typical indoor environmental conditions. Consider the overall aesthetic when selecting the appropriate DS160 or DS161 model for your specific application.
Regulatory Notes and Compliance
The Bosch DS160 and DS161 detectors are engineered to meet stringent safety and performance standards, ensuring reliable operation within regulated environments. For installations requiring C-UL listing, it’s crucial that the REX detector is connected to compatible devices also bearing this certification – specifically, ULC-S319 listed control units, power supplies, and locks. This adherence guarantees system-wide compliance with relevant safety regulations.
These detectors operate on the principle that all objects emit infrared energy, a fundamental concept in passive infrared (PIR) technology. Compliance documentation, including certifications and test reports, is available through Bosch Security Systems, Inc. and should be readily accessible for inspection by authorities having jurisdiction.

Proper installation and adherence to the provided guidelines are essential for maintaining compliance; Always consult local codes and regulations to ensure the installation meets all applicable requirements. Failure to do so may void warranties and compromise system safety.
Safety Precautions During Installation
Prior to installing the Bosch DS160/DS161, disconnect power to the entire system to prevent electrical shock. Qualified personnel should perform all wiring and installation procedures, adhering to local and national electrical codes. Ensure the mounting surface is structurally sound and capable of supporting the detector’s weight. Use appropriate personal protective equipment (PPE), including safety glasses and gloves, during installation.
Carefully inspect all wiring connections for tightness and proper insulation. Avoid running low-voltage cables alongside high-voltage wiring to prevent interference and potential hazards. When drilling or cutting into walls, be aware of hidden pipes and wiring. Never attempt to modify the detector’s internal components, as this could compromise its safety and performance.
Always test the system thoroughly after installation to verify proper operation and ensure all safety features are functioning correctly. Regularly inspect the detector and wiring for any signs of damage or wear, and address any issues promptly.