SONBEST SM1900M is a 4-20mA current type protection type temperature sensor that provides accurate temperature monitoring with ±0.5℃ accuracy at 25℃. It features a wide temperature measuring range of -50℃~120℃ and a DC4~20mA communication interface. With its high-precision sensing core and related devices, it ensures exceptional reliability and long-term stability. The SM1900M is versatile, offering customizable output methods such as RS232, RS485, CAN, DC0~5V\10V, ZIGBEE, Lora, WIFI, and GPRS.