Automatically open when you gather (water tower) water pump (solenoid valve) steadily, and automatically stop pump (solenoid valve) when filled with water. Size: about x 5 x 2cm (length x width x height).
eBay
High Low Voltage Liquid Water Level Sensor 10W/50W 110V 220V AC/DC Horizontal Float Sensor Switch for Tank Pool Water Pumps
Aliexpress UK
When the pool (water tower) pump is automatically turned on. It has the characteristics of simple wiring, low power consumption, large switching quantity, strong anti-interference ability and high stability.
eBay
Stainless Steel Float Switch Tank Liquid Water Level Sensor Ball Float Switch Tank Pool Flow Sensors Controller Sensor
Aliexpress UK
Automatically open when you gather (water tower) water pump (solenoid valve) steadily, and automatically stop pump (solenoid valve) when filled with water. Size: about x 5 x 2cm (length x width x height).
eBay
Tuya WiFi Water Leak Sensor Smart Home Sound Alarm Water Overflow Level Detector Flood Leakage Detection APP Remote Control
Aliexpress UK
However, it may delay due to industrial strike action, severe weather, custom reasons or peak seasons. PCB board etc. 4 - 8 weeks to Italy, Brazil ,Russia.
eBay
Water Pump Automatic Control System Tower Dam Swimming Pool Pasture 304 Waterproof Rust-proof Silicone Water Wire Level Sensor
Aliexpress UK
10 Pcs Photo Interrupter Photoelectric Switch Slot Sensors Photocell. Can steady achieve the pool (towers) automatically open the pump when of water, automatically stop the pump (solenoid valve) when full of water.
eBay
1m 2m 3m Water Sensor Probe for Water Leak Sensor WIFI Electronic Leak Detector -10℃～50℃ for House Company Warehouse Accessories
Aliexpress UK
1PCS Water Tank Level Float Switch. It can be easily converted from normally open to normally close by inverting the float. It's just take you 1 minute. We'd like to settle any problem in a friendly manner.
eBay
0-190Ohm Water Float Sensor+Water Level Gauge Red Color LED 52mm Water Tank Meter Indicator For Marine Car RV Camper Yacht 9-32V
Aliexpress UK
Water Level Detection Sensor Component. 1 Water Level Sensor Module. Small and simple wiring, low power consumption, high switching capacity and stability. Note: The real color of the item may be slightly different from the pictures shown on website caused by many factors such as brightness of your monitor and light brightness.
eBay
52mm Digital Car Water Temp Temperature Gauge Sensor 1/8NPT Adapter 40~120 Celsius Racing Water Tank Level Indicator Water
Aliexpress UK
When the pool (water tower) pump is automatically turned on. 1 Water Level Detection Sensor. It has the characteristics of simple wiring, low power consumption, large switching quantity, strong anti-interference ability and high stability.
eBay
Aquarium Auto ATO Automatic Top Off System Dual Sensor Water Filler water Level Controller Fish Tank Auto Aqua add Water Pump
Aliexpress UK