Features AUTOMATIC OPENING AND CLOSING: Smart sensors are not only economical, but also part of a growing product line compatible with your water level monitoring sensors. Automatically turn water off or on during high or low water level detection, turn pumps on or off, activate alarms and lights WIRELESS AND CONVENIENT: The water level sensor is wireless and battery powered, with ultra long range wireless(up to 100M in the open air), so you can place the sensor where WiFi and older RF technology cannot reach, without cables, conduits, pipes, ditching or electricians WITH TEMPERATURE SENSOR: The power supply voltage range of the pump control box is AC110‑, and can also monitor temperature changes, which can effectively target liquids requiring specific temperature storage, such as red wine. The transmitter is Water-proof IP65, effectively preventing rain from splashing from any direction TRANSMITTER SOLAR CHARGING: Ultrasonic water level sensor is assisted by solar panels and has charging function for rechargeable battery. The use of NiMH rechargeable battery can reduce the number of times to replace the battery to a certain extent. Save battery use cost, please install the solar panel on the sunny side, when there is light, can provide power and charging the rechargeable battery APPLICABLE SCENARIO: Ultrasonic liquid level meter is widely used in monitoring and automatic control of container water level system, and can be used to monitor the storage capacity of liquid level in containers such as boxes or tanks. Simple installation, easy to use Spec: Item Type: Ultrasonic Level Sensor Model: TS FT001 Material: ABS Power Supply: Receiver: 3 x AAA batteries(single 300mAh built in) or DC 5V power cord Transmitter: 6 x AAA Ni MH batteries(single 150mAh built in)(with built in solar panel for automatic charging when exposed to sunlight) Transmission Frequency: 433Hz Wireless Transmission Distance: 100m in open area, 30m effective Product Features: 1. Water pump control box automatically adds water at low water level 2. Backlight on or off function 3. Time function in 12H/24H format(default display on startup: 0: 00 24h) 4. Transmitter low battery reminder 5. Alarm function(default display on startup: 0: 00) 6. Buzzer on or off(buzzer function only affect button sound, not alarm sound) 7. Indoor temperature in ℃ or ℉(default ℃) 8. Data signal indication 9. Water tank temperature in ℃ or ℉(default ℃) 10. Water pump control box power output indication 11. Water Tank Level Display Unit: Meters or feet(default: meters) 12. Low water level display 13. Water depth simulated display on a 10 elements LCD bar graph 15. Receiver Indoor Temperature Range: 0℃-50℃/32℉-122℉ 16. Transmitter Water Tank Temperature Measurement Range: -40℃-60℃/-40℉-140℉ 17. Water Level Measurement Range: Approx. 1 ~ 5m / 3.3 ~ 16.4ft 18. Temperature Resolution: 0.1℃, Accuracy: ±1℃ 19. Water Level Resolution: 0.01m, Accuracy: ±0.05m 20. Transmitter Protection Level: IP65(effective protection against rainwater splashes from any direction) How to Use: Follow the instructions manual after taking out the product Package List: 1 x Transmitter 1 x Receiver 1 x Pump Control Box 1 x Power Cord 3 x Screws 1 x User Manual Note: The pump control box and receiver are not Water-proof, only the transmitter is Water-proof. Package List 1 x Transmitter 1 x Receiver 1 x Pump Control Box 1 x Power Cord 3 x Screws 1 x User Manual