Temperature Monitoring Alarm Controller for GSM, 3G, 4G Devices

The Temperature Alarm is a versatile device designed to monitor and alert users of temperature changes. It is constructed with a metal housing and operates on a standard 12VDC power supply, with support for a wider range of 0-36VDC. In standby mode, the device consumes 20mA at 12V, and its maximum power consumption is 150mA at 12V.

Regarding the communication capabilities, the Temperature Alarm offers various options. It supports GSM frequencies of 850/900/1800/1900MHz, and optionally, 3G WCDMA and 4G LTE connectivity. The device features a SIM card interface that supports 3V SIM cards and an SMA antenna interface with 50 ohms impedance.

The Temperature Alarm supports two communication protocols: Modbus RTU Over TCP and Modbus TCP. This allows for seamless integration with cloud-based monitoring systems, enabling real-time temperature monitoring and data logging.

The temperature measurement range of the device is -55°C to 125°C, with an accuracy of ±0.5°C. It can also handle phase voltage inputs ranging from 100-500VAC. To ensure continuous operation during power outages, the Temperature Alarm is equipped with a built-in 3.7V/900mAh lithium-ion battery that can power the device for up to 8 hours.

The operating temperature range of the device is -10°C to 60°C, with a relative humidity of up to 95% (non-condensing). The dimensions of the Temperature Alarm are 70mm (L) x 88mm (W) x 30mm (H).

To use the Temperature Alarm, users need to locate the power switch, key, and SIM card slot on the back of the device. The key has two functions: upgrading the firmware and resetting the device. To install the SIM card, the chip should face downward.

The package contents include the Alarm unit, an Antenna, a Sensor, a Power Adapter, and an Instruction manual. Users can set the high and low temperature alarm thresholds according to their specific application needs. Once the current temperature exceeds the set limits, the device will send an alarm SMS and make a phone call to notify the user.

The Temperature Alarm also supports periodic temperature and humidity reporting, where the device can automatically send status updates to the first user number at a fixed interval or daily. This feature, combined with the real-time monitoring capabilities, ensures that users have a comprehensive understanding of the environmental conditions.

Additionally, users can call the device's number from an authorized number to receive the current status via SMS. They can also query the status through SMS commands. The device supports up to 10 authorized user numbers, with the last 5 numbers also receiving alarm telephone reminders.

Overall, the Temperature Alarm is a versatile and reliable monitoring solution that offers a range of features to keep users informed about their environments, even in the event of power outages.

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