The Timer may also be set to "Ringing-Blinking" stand-by mode. This means after DT the radio receiver will stay active waiting for the signal. You can click any Radio DT Transmitter button and Timer will give you sound and light signals for 10 seconds. Timer will stay in “Ringing-Blinking” mode till the battery goes to protected mode. If the battery is fully charged it is about 3 weeks. By default this mode is off to save battery. Activate this mode if the model may land into the woods or a corn field.