Technical Specifications
Table 10-6 describes the technical specifications of the water sensor.
Table 10-6 Technical specifications of the water sensor
Parameter Value
Type YW517B
Power supply voltage 12 VDC ± 5%
Output current when no liquid is detected <80 uA
Output current when the liquid is detected 10 mA to 15 mA
Output signal type Current
Work temperature range -20°C to +70°C
NOTE
The cable configured for the YW517B water sensor is 2.7 m long.
10.1.6 MDF Sensor
The MDF sensor detects the status of the protective units in the MDF to monitor the MDF status.
Appearance
The MDF is a kind of connection and protection device in the local call communication. The
MDF contains the cable side terminal blocks, exchange side terminal blocks, and protective
units. To detect the MDF status is to detect the status of the protective units.
Figure 10-6 shows the MDF.
UA5000 Universal Access Unit
Environment Monitoring 10 Sensors
Issue 01 (2012-08-17) Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
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