... Level Meter Remote Display,ultrasonic level indicator, level sensorTechnical specificationSupply power: 220VMeasuring Liquid Level:0-10M,0-12M,0-15M,0 ... points 220V/2A relay outputInterface:RS485, RS232Working parameter of the sensor Working temperature: 0~50°C (-10~60°C / -20~70 ... angle: 15°(default),12°,9°,5°The size of the sensor :φ20φ70.Working frequency: 23kHz~200kHz (various based on measuring ...