GSM control switch be composed of network module and intelligent control module. Whether the door should be locked, interlocked, opened or locked at regular time mainly through the telephone with GSM sending short messages to control the signal of switch to make it. The product is volume small, simple operation, and wide range of application.

 

Working voltage: 5V

Working frequency: 850/900/1800/1900MHz

Size: 41*39mm

 

This control switch has six outlets, and VT in it is effective outlet. When the other outlets fluctuate, the VT will output high lever (transient).

The driver in the 5th road（05）can drive general dc (3V—4V)relay.

The 1^st to 4^th road are TTL level, they only have 10Ma drive current. If you want to pick up a large current you need to meet transistor to improve drive ability.