NEW SIEMENS OP121 PHOTOELECTRIC SMOKE DETECTOR FIRE ALARM FAST SHIPPING..

The Siemens OP121 is a photoelectric smoke detector used in fire alarm systems to quickly detect smoke particles in the air.

Key Specifications

• Compatibility: Siemens fire alarm systems
• Voltage: 24 VDC
• Type: Photoelectric
• Mounting: Standard 4-inch square box
• Coverage Area: Up to 900 square feet
• Operating Temperature: 32°F to 120°F