Product Features：

1.Built-in standalone CPU, quick calculating speed and excellent stability.

2.Non-polarity two-wire bus to make cabling easy, and avoid wrong wiring.

3.Pressing the lever sheet on the fire call points to confirm the fire alarm, it can be reset by the special tool.

4.It has a built-in fire telephone jack and a PHONE indicator.

5.Special production process to make the device work at high temperature, high humidity and high altitude environment.

6.ESD static protection grade 12000V, strong anti-interference ability.

7.It provides passive output contacts that can control other external equipment directly through an intermediate relay.