Press and hold SET and the device key simultaneously until the LED stays on.
What if the RM270 is a radio with a built-in battery? Then features like voice recording, Bluetooth connectivity for mobile devices, or a more durable waterproof casing could be beneficial. Also, a built-in LED light or flashlight is common but useful. steren rm270 manual pdf 70 portable
If your manual search still fails, comment below or contact Steren support directly. Now, turn up the and enjoy your 70 watts of portable power Press and hold SET and the device key