ALARM: Support 10 authorized user numbers, you can receive alarm SMS when alarm occurs, and the last 5 authorized numbers can also receive alarm call reminders.
INFORMATIONAL ALARM: You can set the current status of the first user number to a fixed point every day or periodically, and remotely query the alarm history by SMS.
SUPPORTED PROTOCOLS: Supports bus RTU over and bus protocols, which can be connected to the cloud for real time monitoring through the network.
VOLTAGE DETECTION: The host has a built in microprocessor to monitor the power supply voltage value, and the measurement range is 0-36V, with high accuracy and efficiency.
FEATURE: This composite temperature and humidity sensor with calibrated digital output, support GSM/3G/4G network communication without distance limitation.