Features 1、Hand‑held liquid level detector is suitable for the outer wall of non‑metallic container without direct contact with liquid 2、During testing, it will not be corroded by strong acids and alkalis and other corrosive liquids, and will not be affected by scale or other debris 3、Intelligent liquid level reference adjustment and liquid level memory function, accurate and stable detection, can detect boiling water level 4、Pure electronic circuit structure, non‑mechanical working mode, stable performance and durable life 5、High stability and high sensitivity, strong anti‑interference ability, free from external electromagnetic interference 6、Strong compatibility, penetrates various non‑metallic containers, such as plastic, glass, ceramics, etc. 7、Sensing distance (container wall thickness) up to 40mm, liquid, powder, particulate matter can be detected 8、Powered by 2 AAA batteries(not included), with one NPN output at the end, suitable for docking with various devices to improve product flexibility Specification Item Type: Handheld Liquid Level Sensor Model: XKC-E700 Output Mode: NPN Sink Current(external Wiring Port): 300mA Current Consumption: 85mA Response Time: 500mS Working Environment Temperature: -10~60℃ Humidity: 5%~50% Induction Thickness(sensitivity) Range: ≤40mm (container wall thickness) Liquid Level Error: ±3mm Terminal Definition: 1PIN (empty pin), 2PIN (OUT), 3PIN (GND), 4PIN (empty pin) Display Mode: 8-digit digital tube Material: PC-VO grade (fireproof material) Safety Standard Certification: CE Environmental Certification: ROHS-2.0 Supporting Battery: 2 x AAA batteries(not included) How to Use: 1. Install the battery, press and hold the power button for 2 seconds to turn on 2. There are two buttons up and down on the sensor, ↑ to increase sensitivity, ↓ to decrease sensitivity 3. Different sensitivity adapts to different ranges 4. Stick the machine on the surface of the container for use Package List 1 x Handheld Liquid Level Sensor 1 x Wiring 1 x User Manual