Siemens (Pyro) | OP121
Detector Photoelectric Smoke Magnet Test Twst-Lock
Siemens OP121 Photoelectric Smoke Detector
The Siemens OP121 is a conventional photoelectric smoke detector designed for reliable fire detection in various environments. It features microprocessor-controlled, self-diagnostic circuitry, eliminating the need for manual sensitivity testing. The detector’s advanced design ensures rapid and uniform response to smoke, enhancing safety in both open areas and duct applications.
Key Features:
• Microprocessor-Controlled Self-Diagnostics: Continuously monitors detector sensitivity and operational status, providing automatic alerts for maintenance or replacement needs.
• Magnet-Test Feature: Allows installers and maintenance personnel to verify wiring integrity and proper connection to the fire alarm control panel without specialized equipment.
• Three-Color LED Indicator: Provides clear visual status updates—green for normal operation, yellow for trouble conditions, and red for alarm states.
Specifications:
• Operating Voltage: 16 to 27 VDC
• Operating Temperature Range: 32°F to 120°F (0°C to 49°C)
• Air Velocity Range: 0 to 4,000 feet per minute
The OP121 is compatible with Siemens’ DB-11 series mounting bases and can be used in conjunction with optional accessories such as remote LED indicators and sounder bases. Its compliance with UL 268 and ULC 529 standards ensures reliable performance in both open-area and duct applications.