1. Big LED display, real timeshow local temperature and humidity
2. With button to control backlight
3. Low power consumption
Digit Outdoor Temperature & Humidity Sensor
Introduction
CHD 301C1 is temperature & humidit sensor with high reliability and superior stability.
With big LED display, people can examine local temperature and humidity
Via RS485 / 422 network communication, one PC can load 254 sensors to compose a surveillance system, at most 254×16=4046 pieces sensors can be managed
Main features are as follows
* RS485 or RS422 Double Bus guarantee the safety of device communication
* Big LED display,real time show local temperature and humidity
* With button to control backlight, which can automatically turn off after 10 sec delay time
* Large temperature range, sensor can be separated with control part
* Measurement range can be set. It can set congealing dew resistance function and real time alarm when exceeding.
* Strong anti-interference, low power consumption and 3 grade thunderproof protection.
* Featured with exacurate and stable measuring, high precision and good value for money, etc.
Technical Parameters
> Dimension: L90 ×W85×H19 mm
> Weight: 100g
> Color: light blue, milk white, sub-black, etc.
> Display: LCD liquid display
> Power supply: DC12~24V; backlight current ≤ 20mA, with current limit, thunderproof and reverse polarity protection, conform with anti-explosion requirements;
> Communication interface: standard RS485 double bus or RS422 interface
> Transmission distance: max. 1200 m
> Node capacity: max.30; if there are many devices, use CHD485HUB/ CHD422 HUB to extend
> Humidity Pricision: ± 3.0‰ RH
> Temperature Pricision: ± 0.4°c
> Humidity Range: 5%-95%;
> Temperature range: -30°c ~ 70°c