Photo 1 of HJJS02 Smart Home Wireless 100M Remote Monitoring System Non-Contact ultrasonic Sensor detect Acid Alkali Salt high Temperature Different Liquid Level Measurement Solid Levels Controller in Real-time

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Photo 1 of HJJS02 Smart Home Wireless 100M Remote Monitoring System Non-Contact ultrasonic Sensor detect Acid Alkali Salt high Temperature Different Liquid Level Measurement Solid Levels Controller in Real-timePhoto 2 of HJJS02 Smart Home Wireless 100M Remote Monitoring System Non-Contact ultrasonic Sensor detect Acid Alkali Salt high Temperature Different Liquid Level Measurement Solid Levels Controller in Real-time