Catalog > New 2PC Siemens OH121 Multi-Conventional...

Verified: January 13, 2026

New 2PC Siemens OH121 Multi-Conventional Photo Smoke/ Thermal Detector

~$115.00

The Siemens OH121 Multi-Conventional Photo Smoke/Thermal Detector is a dual sensor device capable of detecting both smoke and heat in a fire alarm system.

Key Specifications

  • Compatibility: Siemens conventional fire alarm panels
  • Voltage: 9-33 VDC
  • Type: Multi-Conventional Photo Smoke/Thermal Detector
  • Detection: Photoelectric smoke and thermal heat
  • Operating Temperature: 0°C to 50°C
  • Mounting: Standard base with screw terminals
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