12V water level automatic control liquid level sensor switch control relay board

Specification: 1. Working voltage: DC 12-15V (AC 9-12V) 2. Standby current 10MA 3. Working current 40MA 4. Dimensions: 54mm X 27mm X 19mm 5. Weight: 24g 6. Maximum load: 10A/250VAC, 10A/125VAC, 10A/30VDC, 10A/28VDC, 10A/12VDC notes: The package does not contain probes (wires). No need to use special probes, probes can be made using household wires For safety, use a well-isolated AC/DC power supply application: Household water tower automatic water supply Aquarium fish tank water change Conductive liquid automatic control Livestock automatic feeding Farm automatic water supply and other situations where automatic water supply and water changes are required. Solenoid valve water pump motor automatic control Interface Description: High: upper limit probe Output: output probe Low: lower limit probe +: Power terminal 1 (regardless of positive and negative) IN-: Power terminal 2 (regardless of positive and negative) : Relay normally closed contact COM: Relay common communication NO: relay normally open contact Work Guidelines: Water level rise: When the water level is lower than the "low water level", the water pump starts to supply water to the water tower; when the water level is higher than the "high water level", the water pump will stop water supply. Lower water level: When the water level is lower than the "high level", the water pump does not work and the water level continues to drop. When the water level falls below the "low water level", the pump starts to supply water to the water tower. Package Included: 1 x DC 12V AC 9V Level Controller Sensor Module