Big sale GSM Door Access Gate Opener Wireless Remote Control Switch Free SMS Phone Call

1、The relay close or open time is programmable 2、Can be operated from anywhere no distance limit 3、Also can be used in places which require you to turn on/off your system machines or equipment remotely with a free call from your mobile phone 4、No call charges. the GSM GPRS relay switch rejects the call from authorized number then carries out the turn ON/OFF action on the first ring 5、Multiple applications can be used for authorized door access controlling gates switching of remote equipment and car parking systems