GSM Alarm System, GSM SMS Humidity Sensor Temperature Alarm Power Failure SMS Alert Remote Monitoring Home Security Systems Support Timer Report

Price: £89.99
(as of Oct 12, 2023 04:27:18 UTC – Details)

To calculate the overall star rating and percentage breakdown by star, we don’t use a simple average. Instead, our system considers things like how recent a review is and if the reviewer bought the item on Amazon. It also analyses reviews to verify trustworthiness.

Automation — This is an automation system. When the temperature, humidity, and power alarms are normal, it can be linked to the Realy1 output operation. This is very useful when the temperature exceeds the specified value, and the air conditioner needs to be turned on immediately or the water overflows in time to remind, which provides convenience for life.
Connection Control — The alarm has relay0 for dial-in or SMS remote control. Up to 200 phone numbers can be authorized for it. Since there is no need to answer the phone, the dial-in control in GSM is free. (It only checks the caller’s number, and-if the number is authorized-will respond to relay activation.) This function can be used for parking latch control, GSM door openers, remote control machines, etc.
Security Alarm — Alarm output, when an alarm occurs, it will output for 30 seconds. It can report the site environment regularly. The smart and lightweight GSM design box can be easily installed on other target system boards and add GSM alarms.
Remote Monitoring — The GSM alarm system can be operated anywhere without distance limitation. The internal rechargeable spare battery (not included) can be used for 6 hours.