GSM Remote Relay Switch Access Controller

Features:
* It can be operated anywhere, and no distance limit.
* Up to 200 authorized phone numbers. The 1st ~3rd user numbers can receive SMS, and the 4th ~6th user numbers can receive calls when alarm occurs. 1~200 authorized phone numbers can call T201 to turn on/off the Relay0.
* External AC/DC power status monitoring, AC/DC power on/off will send SMS and immediately call 6 preset mobile phones.
* Timer report can be set every few hours, and its status/value will be automatically sent to 6 preset mobile phones immediately.
* Support remote reading of historical data via SMS.
* Automation system, when the temperature, power supply alarm or normal, it can link to Realy1 for operation.
* Alarm output, when alarm occurs, it will output for 30 seconds.
* Internal rechargeable battery can be used continuously for 6 hours.
* Safe, use caller ID and password for identification, unknown callers will be ignored.
* It can be programmed via SMS commands with password protection.
* Based on GSM web, suitable for many applications. (Temperature, power status, solar panels, DC voltage).
Tips:
1. Please read the user manual carefully before installing and setting up the control unit.
2. Install the system in a hidden place.
3. Avoid pouring water into the control unit.
4. Ensure that the connection to the main power supply is secure.