What is the principle of the remote control switch for SMS?

1, GSM controller can directly drive multiple relays. Multiple relays can be remotely controlled by SMS.

2. With SMS remote control result return function. .

3. The uniqueness of the user password must be controlled by the password.

4. Chinese as a short message remote control instruction can be customized by users. 5. Remote control function: You can remotely control the operation of electrical appliances through SMS.

6. Inquiry function: You can send short messages to inquire about the working status of electrical appliances.

7. State change return function: After the working state of the electrical appliance changes, it will be automatically sent to the fixed mobile phone by SMS.

7. Mobile phone setting function: set the default control mobile phone number, up to 6 mobile phone numbers can be set.