Everspring Industry Co Ltd SF804 User Manual

 

1

 

The SF804-0 Smoke Detector is designed to sense smoke that comes into the 

detector’s chamber. It does not sense gas, heat, or flame. When it detects a 

certain density of smoke the horn will sound and the RF module will emit signals 

to the Gateway. Its great compatibility with our U-Net family security products 

makes it suitable for smart home cloud based platforms such as Homesys.   

 

 

The sensor consists of two parts; a sensor module and a transmitter module The 
transmitter module can be detached by twisting it clockwise against the sensor 
module.  

 
 

Sensor Module : Front and Back view 

 
 
 
 
 
 
 
 

 

Transmitter module: Front and Back view 

 
 

1.  Twist the transmitter module clockwise to detach it from the sensor module 

2. Disconnect the connector 

 from the connector pins  of the sensor module. 

Take note of the connector direction as you will need to connect it back later. 

3.  Open the battery cover. 

 

 

 

 

 

 

 

 Horn 

 Tamper switch 

 Test Button 

 Connector 

 Smoke LED 

 Learning key 

 Connector pins 

○

10

 Link LED 

 Cover Latch 

⑪ Mounting bracket  

 Battery Cover 

  Skirt Panel 

4

5

6

Sensor module 

Transmitter module