New version Seven Relay GSM controller Optional Battery for power supply failure alarm App support Switch on/off or momentary working Support DTMF to control each seperate relay output

Description

New 2017 GSM-RELAY GSM Remote Control Board ( GSM Relay Control board). (New version 2017 GSM relay controller, more features including: Log data, fast program and reset button on board, Support customized SMS controller for ON/OFF controller and pulse control each seperate relay channels). Same quality, better functions and more features! On board rechargeable battery for power off alarm. Support DTMF to control each seperate relay output. Each channel can be control with SMS command for jog or latched working (Switch on/off or momentary working). Have security control (only authorized numbers can control) or Free control mode (any numbers can control). Support customized SMS command (then authorized number can send your customized command to control ,and no need password. Packing list including: 1pcs GSM-RELAY gsm switch relay control board (only control board, not including the plastic box) 1pcs GSM Magnet mount antenna 1pcs PC USB programmer. ( Battery not included in the order part list ) The GSM-RELAY is a wireless gsm remote controller switch that connects to the GSM cell phone network. It has seven independent relay switches, and the NO.1 Relay switch is activated by calling its cell phone number, it will reject the call without answering and switch on the device connected to it,then there are no call costs incurred when dialling the unit, it will recognise an authorised telephone number calling it and reject the call without answering. It has other 6 independent relay switches which can be switched on or off by sending the GSM-RELAY an sms text message.