Construction Equipment Wide range: 100m or 328 feet Power supply: 9V lithium battery Country of origin: China Alarm System Easy Care Application: High temperature resistant Shell Material: ABS, Plastic Colors: Orange, Blue, Yellow, Black Operating Temp: ~20-60 degrees C Response Time: 1ms Accuracy: ±0.5mm Rated Voltage: 300V Temperature Range: -50℃–+300℃ Description This Water Level Indicator has been designed with an alarm function. It is made of ABS and plastic shell material that is durable and ensures long-term use without any damage. Also, it can work up to 100 meters wide range. Moreover, this water level indicator is powered by a 9V lithium battery that ensures long-term power service.