• Description

D20E Temperature & Humidity Sensor - RS485

This D20E series is a high accuracy Temperature and Humidity Sensor which is brand new on the market and offers RS485 communication.

Quick Spec

• Part No HRTM-D20E
• Alternative Part No: THM-D20E
• Working Voltage: 5VDC
• Maximum Power: 0.025W
• Current Consumption: 5mA max. (2mA avg.)
• Temperature Measurement Range: -20 ~ +80°C
• Humidity Measurement Range: 10% - 95% RH
• Temperature Accuracy: ±0.3℃ (25 ℃)
• Humidity Accuracy: ±3% RH (25 ℃)
• Output Interface: RS485 (standard MODBUS protocol)
• Device Address: can be set to 1-255 (default is 1)
• Baud Rate: 9600, 8 bits of data, 1 stop, no parity
• Cable Length: ±50cm
• Dimensions: 60 x 30 x 18mm
• Net Weight: 18g

Wiring Diagram (Top View)

NOTE: The module requires a 120 ohm terminating resistor on the RS485 line

PCB Layout

Dimensions

Humidity Output Signal

Humidity (% RH)	10%	20%	30%	40%	50%	60%	70%	80%	90%	95%
Voltage (V)	0.30	0.60	0.90	1.20	1.50	1.80	2.10	2.40	2.70	2.82

Arduino Code

Resources

• D20E Github Page 

Shipping List

• 1 x D20E Temperature & Humidity Sensor - RS485

D20E Temperature & Humidity Sensor - RS485

• Brand: Generic
• Product Code: HRTM-D20E
• Weight: 0.018kg
• Product Status : Active

Stock

Warehouse	Stock Status	Location
Centurion	No Stock
Stellenbosch	No Stock
Bulk Location	No Stock

We ship free of charge between branches to complete your order.

• R195.00 (Inc Tax: R224.25)