Supertron Electronics Ltd. Manufactures UPS with Automatic Voltage Regulation System. Supertron Electronics Ltd. Is an ISO 9001:2000 certified company. This UPS has low voltage automatic shutdown feature and consumes 145 to 280Volts. UPS with Automatic Voltage Regulation System also has over-voltage and under-voltage protection. It has modem and data line protection. It is an efficient machine with line-interactive circuit topology. UPS with Automatic Voltage Regulation System has night and off mode charging.