Siemens FDT421 Heat DetectorThe Intelligent Thermal (Heat) Detector (Model FDT421) provides an advanced method of detection, address programming supervision combined with sophisticated FACP communication. Model FDT421 uses a state of the art thermistor, microprocessor and advanced signal analysis, providing high reliability and accuracy. Features Built in ISOtechnology Compatible with Siemens Model `H series devices on the same loop (with Desigo Fire Safety Modular FireFinder

and 5820XL-EVS IntelliKnight® addressable fire alarm control panels programmed for System Sensor protocol

Genesis ECS/MNS appliances offer emergency signaling with clear or amber lenses and with optional ALERT housing labels

Opening the front cover will also activate the pull station

The panels also have a built-in

it simplifies system expansion by providing a single interface point for external device connections

double gang

1217 and 1219 allow the horn to be heard

The Simplex 49HF-APPLW TrueAlert ES is a high-fidelity addressable speaker strobe designed for wall mounting

All devices feature plug-in designs with minimal intrusion into the back box

with SPDT or DPDT contacts

Interface modules support the remote annunciator module

multi-monitor (multiple monitor circuits from one module