4-wire Smoke Detector with sound and relay output

4-wires Smoke Detector with sound and relay output, Operates by Advanced MCU Expert Algorithm Software.

Key Specifications/Special Features
They work perfectly with all conventional intelligent fire control panels
Advanced MCU Expert Algorithm Software.
Easy installation and maintenance
Durable sensor head, no need for replacement
SMD circuit board design-satisfactory quality and reliability guaranteed
4-wire Smoke Detector with sound and relay output