The WB-NEM-500

 is a small high-reliability environment monitoring unit developed to provide environment/device control
and remote monitoring for communications base stations, integrated equipment rooms, and out-door cabinets.
The monitoring unit monitors important environmental factors such as temperature, humidity, smog, water penetration,
access control, vibration/leaning, main distribution frame (MDF), and surge protection device (SPD). When any value
collected by a sensor exceeds the preset threshold, an alarm is sent through the LCD, buzzer, or system log.
The monitoring unit also provides complete device detection functions, such as switch power status detection.
Through a preserved custom interface (optional), the unit can be connected to another sensor in main contact point
output type.

2. Features

2.1 Front maintenance (front cabling): higher space utilization and easy maintenance
2.2 Combat structure: standard 1U/19-inch chassis for easy installation
2.3 Monitoring of cabinet switch power: The monitoring unit can be connected to the switch power for transparent
data transmission and forwarding. The complete monitoring functionality is to be developed based on standard
communications protocols.
2.4 Uploading over standard protocols: The monitoring unit uploads environment data to the monitoring background
and receives remote system commands over specified protocols in main contact point or RS485/232/IP mode.
2.5 Complete monitoring functionality: The monitoring unit intelligently controls all environment devices in an
equipment room, and automatically monitors environment parameters against the alarm thresholds from remote.
2.6 GUI-based host computer control software:
2.7 Various sensors supported: The monitoring unit can be connected to various analog-output sensors,
switch-output sensors, and RS232, RS485 interface sensors.
2.8 Built-in common sensors for simplified cabling during monitoring system installation
Optional built-in DC power failure sensor, AC power failure sensor, and water sensor
2.9 Flexible power supply mode: voltage range as 85 VAC to 300 VAC, or 20 VDC to 60 VDC

3. Functions
Signal collection function
The monitoring unit collects data of environment variables (such as temperature, humidity, smog) and device
variables (such as switch power), passes the data for multipoint control unit (MCU) processing and analysis, and
shows the equipment room status on the local liquid crystal display (LCD) or remote computer;
Alarm function
An alarm is sent when any value collected by a sensor exceeds the preset threshold;
History record function
Historical alarms can be queried.
Local or remote control function
Local users can press the front panel buttons to query and set parameters and data;
The monitoring unit communicates with the host computer through the Ethernet (IP)/RS232/RS485/main contact
point interface, and the host computer can read all status data of the monitoring unit and modify system settings
from remote.
The remote control software for the host computer is optional.

Product Specifications
Environment variables
No. Variable Specification Description
1 Temperature
/Humidity
4 Four port supports 4 mA to 20 mA current-type sensor;
The port supports 4 temperature sensor, or 2 temperature/humidity
combination sensor.
2 Water detection 2 Leaking and water penetration detection
One port has a built-in sensor and you only need to connect the
outside of the chassis to the pole;
The other external port is connected to the external water sensor
(Dry contact interface).
3 Access control 1 Door status (open/close) detection
4 Smoke 1 Smoke and fire detection
5 AC power failure

alarm
1 Single-phase AC voltage detection
One sensor is built in and the AC power cable must be connected to
the local detection terminal.
6 DC power failure
alarm
1 DC voltage detection
One sensor is built in and the DC power cable must be connected to
the local detection terminal.
7 SPD 1 SPD status detection (Dry contact interface)
8 MDF 1 MDF status detection
9 Switching power 1 Switching power status detection (RS485 connection in standard
configuration)
Optional RS232 serial port connection (through RS485-RS232

Output ports
No. Variable Specification Description
1 Dry contact
output
8 Custom output signal type:
O1/O2/O3/O4 are small-current output ports;
O5/O6/O7/O8 are large-current output ports, with relay contact
capacity as 5 A 250 VAC and 5 A 30 VDC.
Communication ports
Four ports are configured as follows:
No. Interface Type Specification Description
1 RS485 2 It is connected to the RS485 port of an intelligent device.
Transparent data transmission and forwarding are supported.
The complete monitoring functionality is to be developed based
on standard communications protocols.
2 Ethernet 1 (optional) It is connected to a remote computer or alarm center over
TCP/IP.
3 RS485/232
multiplex
1 It is connected to a remote computer or alarm center.
The interface type is RS232 or RS485 (RS485 by default).

Sample show