DT300 2015Temperature & Humidity Sensor Manual 1 Overview The DT300 is one type of temperature and humidity sensor which measure the air temperature and humidity. LED display and wireless version are optional, such as zigbee, wifi, and GPRS. It is applicable for industry, home, agriculture remotely measurement and other application, such as IOT (Internet of Things). 2 Specification
Measurement Range
Temperature: -55~+125℃,
Humidity: 0%~100%
Accuracy
±0.5℃, ±3%RH
Power Supply
10-32V DC
Output Signal
Field Bus: RS485, CAN Bus
Wireless: Zigbee, Wifi, GPRS
Protocol
Modbus RTU/ Dingtek
Working Temperature
-40 ~ 85℃
Protection Rank
IP65
LED Display
Optional
Recharge Battery
Optional
Wireless
Optional
3 Interface Definition Pin 1: Red Line: V+, Pin 2: Blue Line: RS485 A+ (CAN +) Pin 3: Black Line: GND Pin 4: Yellow Line: RS485 B- (CAN-) 4 Request (from pc to sensor)
Section
Header
Command
ID
Content
Checksum
Tail
Bytes
1
2
2
0/6
2
2
Content
$ (0x24)
Remark
in caption
in ascii, 01~FF, in caption
for reading, it is 0. For writing, it is 6 bytes.
calculate sum from header to content, get low 8 bit, then change to 2 ascii
0x0D 0A
5 Reply (from sensor to pc)
Section
Header
Command
ID
Content
Checksum
Tail
Bytes
1
2
2
6
2
2
Content
* (0x2A)
Remark
in caption, see above command list
in ascii, 01~FF, in caption
replied value for reading in mm or L. OKOKOK for successful setting. NONONO for failed setting
calculate sum from header to content, get low 8 bit, then change to 2 ascii
0x0D 0A
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