Voltage increases automatically adjust? (AVR)?:?????????????????????? Do not need to discharge the battery correction low voltage to maintain power life and maximize uptime Back -UPS? Features & Benefits Protection Lightning and Surge Protection;???????????????????????????????? for surge spikes and lightning protection is guaranteed! You can reset line switch:???????????????????????????????? Simply press the Kin-operated circuit breaker to the circuit easy from overloading or????????????????????????????????????????????? ?????? circuit to recover without having to take the pains to find the fuse. Ease of use, sound alarm:?????????????????????????????????????? Pre-notification to you? UPS ? replacement and power usage. Automatic self-test??????????????????????????????????????? Self-test battery on a regular basis, to ensure early detection the need to replace the battery. Transformer spacing:???????????????????????????????????? Design allows up to two transformer plug can be used simultaneously.