SPECIFICATIONS

Working voltage: DC 4.5~15V.

Working current: 4 -7MA.

Communication protocol: MODBUS RTU protocol, 03, 04 read commands, 06, 16 write commands.

Serial port baud rate: 9600 (default), no parity, 8 data bits, 1 stop bit.

Device address: default 0x01, up to 247 modules can be used in cascade by modifying the 485 address (for more than 16 please use RS485 repeater).

Functions: possibility of reading the temperature value of the DS18B20/NTC/AHT20 and the humidity value of the AHT20.

Adapted sensors : DS18B20/NTC(10K)/AHT20.

Temperature measurement range : DS18B20: -55°C~+125°C; NTC:
-20°C~+125°C; AHT20: -40°C~+85°C;

Humidity measurement range : AHT20: 0~100%RH;

Temperature measurement accuracy : 1%, if the temperature deviation is too large, please recalibrate.

Humidity measurement accuracy : 2%, if the humidity deviation is too large, please recalibrate.

Size : 65 X 19 X 15MM.

Weight : 7g.

For more information, please contact us!!!

DS18B20 Sensor Specifications:
Product Name: DS18B20 Single Bus Temperature Sensor Chip
Temperature measurement range: -55℃~+125℃
Temperature accuracy: ±0.5°C within 10°C~85°C
Package: TO-92


NTC Sensor Specifications:
Product Name: NTC Thermistor
Resistance Value:10K
Resistance Accuracy:±1%
Resistance B Value:3950K ±1%
B-value category:B25/50
Temperature range:-20℃-125℃


AHT20 Sensor Specifications:
Product Name: AHT20 Temperature and Humidity Sensor
Temperature accuracy: typical ±0.3℃, maximum ±1.5℃
Temperature range: -40°C~+85°C
Humidity accuracy: ±2%RH, max ±6%RH
Humidity range: 0~100%RH