Features: Flow range: 0.01～0.1（m3/h）, the working voltage range is for DC 5-24V. Small compact size and light weight, which is portable and easy to install. Three wire connection, red for VCC, black for GND, yellow for pulse signal output. Suitable for Hall type automatic water dispenser. Made of high quality plastic, durable & long for time service. Specifications: Material: Plastic Outer diameter: 6.25mm Inner diameter: 4mm Length: 58mm/2.3in Input voltage DC25~24V Rated operating current 1.3mA (when input voltage =24V) Output low current 50mA (Max) Output low level voltage 200mV (when input voltage =5V) Flow range 0.15-1L /min Interface type 2 Fast slot Terminal type XH-3 Red line (VCC) Black line (GND) Yellow line (Output) +5% for rated flow 1 range, 8% for other flow range Package Includes: 1X Water Flow Sensor note: Please allow 1-3cm error due to manual measurement. pls make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item.