Fitment: For Diesel Air Heater (Not suitable for Webasto, Most Eberspacher is suitable.) Temperature control mode switching: When selecting the temperature control method by remote control, you only need to press the up and down keys at the same time to switch to the automatic temperature control and display the temperature. If the temperature is manually controlled, the oil quantity is displayed. Note: The default voltage of the remote control is the adaptive voltage, As long as it is plugged in, it will recognize automatically. Note: Due to different batches, there are slight differences between the actual product and the picture, which does not affect normal use. 1. Remote pairing operation: 1). First put the receiving parts that need to be paired into the waiting pairing state. 2). Then press and hold the key on the remote control and confirm the build at the same time, the remote control appears waiting for pairing interface. 3). The remote control and switch enter the automatic pairing process. After the code is successfully matched, it will automatically exit the code pairing interface and display normal working parameters. 4). If the code fails, it will not enter the normal display working parameter state. If the remote control code is not received after timeout, it will automatically exit the code matching state. 2. Adjustment of working status: The working state of the heater can be adjusted by remote control at any time. Methods as below: 1). Up adjustment key: increase the pump oil volume (manual temperature control mode), or increase the set temperature to increase the output temperature of the heater. 2). Down key: reduce the amount of pump oil (manual temperature control mode), or reduce the set temperature to reduce the output temperature of the heater. Power Supply:2 x AAA batterie