Description:
1 Working voltage: DC 5V/12V
2 Standby current 9-11MA
3 Working current 69MA(5V),39MA(12V)
4 Size: 44mm X 29mm X 18mm
5 Weight: 20 g
6 Maximum load: 10A / 250VAC, 10A / 125VAC, 10A / 30VDC, 10A / 28VDC, 10A / 12VDC


There are two purposes for connecting the NO and NC ports of the relay:
The water pump is connected to the COM NC port to automatically fill the water tower
The water pump is connected to the COM NO port to automatically pump water from the water tower

Note:
Package does not contain probe (wire).No need to use a dedicated probe, the probe can be made using household wires
For safety, use an DC power supply with good isolation

Application
Home water tower automatic water supply system
Aquarium Fish tank Water Changer System
Fill the water tower automatically
Automatic pumping from water tower
Conductive liquid automatic control
Automatic feeding system for poultry and livestock
Farm automatic water supply system
And other occasions that require automatic water supply and water exchange.
Solenoid valve water pump motor automatic control

Interface description:
HIGH : Upper limit probe
OUT : Output probe
LOW : Lower limit probe
DC+ : Power of positive
DC-: Power of negative
NC: Relay normally closed contact
COM : Relay common contact
NO: Relay normally open contact




Working principle(Fill the water tower automatically):


The water level rises: When the water level is lower than the ''Low level'', the water pump starts to supply water to the water tower; when the water level is higher than the ''High level'', the water pump stops supplying water.

Water level reduction: When the water level is lower than the ''High level'', the water pump does not work and the water level continues to decrease. When the water level is lower than the ''Low water level'', the water pump starts to supply water to the water tower.


 


Working principle(Automatic pumping from water tower):


Contrary to ''Fill the water tower automatically''