GSM-RELAY ( gsm реле) Seven relay output GSM remote control switch (gsm controller)(relay control switch)
Gsm Remote Relay Switch Access Controller T201 Gsm Temperature Alarm 2g/3g/4g Power Status Monitoring Power Failure Sms Alarm - Temperature Sensor - AliExpress
Gsm Remote Control Door Opener | Gsm Door Opener Controller - Home Appliance Control Module - Aliexpress
CONTROL GSM receiver
Gsm Remote Relay Switch Access Controller T201 Gsm Temperature Alarm 2g/3g/4g Power Status Monitoring Power Failure Sms Alarm - Temperature Sensor - AliExpress