This Brass Water Sensor is designed for accurate water measurement. APPLICATION: Suitable For: Hot , campus drinking fountains, direct drinking machines, vending machines, and smart card-operated systems. With temperature detection. Light weight, compact, easy to install. Note: The -B6 and ZJ-B6 labels on the product are sent randomly, but they have the same function and not affect usage. PARAMETERS: Connection Size: G3/4 Voltage: DC3.5-24V Pressure: ≤1.75MPa Suitable medium: Water (no impurities) Medium temperature: -20~100°C Insulation resistance: >100MΩ Range: 1-30L/min Pulse range: F=(6.6*Q) error ≤3%, ., 396 pulses per liter of water Output pulse high level: >DC4.7V (input voltage DC5V) Output pulse low level: < DC0.5V (input voltage DC5V) Usage Guidelines: Sensor Usage Notice: Install a filter at the water inlet to prevent debris. It is recommended to install the sensor indoors or inside equipment to avoid humidity, high temperatures, or harsh environments. Keep it away from vibrations and magnetic materials to accuracy. Unauthorized disassembly is prohibited. Color: Gold Material: Brass Package Contents: 1 * Sensor Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.