◆ Low starting flow rate, minimum flow rate 1/3 of traditional water meter. ◆ Water temperature detection, low temperature alarm. ◆ No moving part, no wear, long term stable operation. ◆ Above 10 years shelf life. ◆ Installation at any angel, no influence for measurement accuracy. ◆ Ultrasonic signal quality detection. ◆ Photosensitive button, IP 68 design, longtime under water working. ◆ Support optical, RS485 and wired & wireless M-bus communication interfaces. ◆ Complies to MODBUS RTU and EN 13757 communication protocol. ◆ Compile to drinkable water standard requirement.