Audited Supplier
NW21D Telecom Shelter Ivs Temperature and Humidity Environment Remote Monitoring System Free Cooling System Controller
NW21D temperature and humidity controller controls the work of air-condition and DC fans based on indoor and outdoor temperature, indoor humidity. Control logic is smart, simple and stable, it can help energy saving. It output a start signal for ventilation system, through relay (free dry contact), and distribute AC 220V for air-conditioner. It output alarm signal when environmental condition has abnormal or equipment has failure.
Function: | |
Program | every work temp. can be programmed |
Display | LED display temperature, humidity and alarm codes |
Control | control the work of air-conditioner and DC fan based on indoor, outdoor temperature and indoor humidity. |
Monitor | temperature, humidity, fire, flood, door, DC fan failure, air-con. failure, AC power off, battery voltage. |
Alarm | 6 relays output alarm signal upload alarm information via communication LED display alarm code |
Communication | supply monitor software (installed in PC), use RS485/RS232 interface. |
Technical parameter: | |
Input voltage | AC 220V 50Hz, DC 48V |
Display | LED |
Work ambient temperature | -25°C~+55°C |
Work ambient humidity | 5%~95%RH |
Temperature detect | 2 x NTC 103AT, detect range: -30°C ~ 70°C accuracy: ± 2°C, resolution: 1°C compensation value can be programmed |
Humidity detect | 1 channel, detect range: 5% ~ 95% accuracy: ± 5%, resolution: 1% compensation value can be programmed |
Output relay | 6 pcs |
AC power protect | Overload, short circuit |
Sensor: | |||
Type | Name | Qty | Note |
WD3 | Temperature sensor | 1 | Accessories, fixed outside |
WS2 | Hygrothermograph sensor | 1 | Accessories, fixed inside |
SS-168P | Smog sensor | 1 | Accessories, fixed inside |
HO-03 | Intrusion sensor | 1 | Accessories, fixed on the door |
TT | Immersion sensor probe | 1 | Accessories, put it on the floor |
DD5 | AC power off sensor | 1 | Fixed in the box |
IA5 | Current sensor | 1-2 | Fixed in the box |
| DC voltage sensor | 1 | Integrated in the controller |
The DC fans works only the environment satisfies following conditions: 1.no fire alarm 2.indoor humidity ≤ preset of h01 3. voltage of battery > preset of U01 4. outdoor temperature > indoor temperature, and the difference >t08.
