For maximum safety, the KA300RX main receiver works with both AC and battery backup. In AC adapter mode, KA300RX triggers the alarm with the 177 mCd strobe light, loud siren and ultra-light 1,000 mCd LEDs. If the AC power failed, the unit will go to battery backup mode. The ultra-light LED and the 95 dB will be activated. The strobe light will not work in battery backup mode.
This unit also includes a KA300TX Transmitter.