Heat detectors

Combined smoke and heat detector, replaceable smoke chamber. Optical smoke and heat detector. Four-wire, supply voltage 8.5-33 VDC. `With changeover relay output IP43

Automatic self-diagnostics
On-site testing without additional measuring equipment
Optical sensor with chamber that can be replaced in-situ and left for recycling (environmentally friendly)
Separate LEDs for fire and fault
Can be powered by 12-24 VDC