Catalog > Internet of Things (IOT) Related Products > Itead Studio 2.5mm Audio Jack to RJ9 Adapter 2.5mm Audio Jack RJ9 Adapter SONOFF AL010 JACK TO RJ9 ADAPTER THE SONOFF AL010 2.5MM AUDIO JACK TO RJ9 4P4C ADAPTER IS USED TO CONNECT AM2301/SI7021 TEMP AND HUM SENSOR, DS18B20 TEMP SENSOR AND MS01 SOIL MOISTURE SENSOR (WHICH HAVE A 2.5MM AUDIO PLUG) TO THE NEW THR RANGE OF SMART SWITCHES (WHICH HAVE AN RJ9 INPUT) Discontinued Specifications, Prices & Availability may change without notice. Images are for illustration purposes only. E&OE Features Adapter– 2.5mm Audio Jack to RJ9 Adapter. Works with– AM2301/Si7021 temperature and humidity sensor, and DS18B20 waterproof temp sensor, MS01 Soil Moisture Sensor.