The utility model provides a novel lamp accuse device, includes the delay control switch, and the delay control switch is connected with light intensity measurement appearance, and light intensity measurement appearance is connected with the singlechip, and the singlechip is connected with control switch, and control switch is connected with a plurality of infrared inductor respectively, and is a plurality of infrared inductor is connected with the input of encoder respectively, the encoder output end is connected with the input of PLC controller, the output of PLC controller is connected with a plurality of relays, be connected with lamp optical equipment on every relay, circuit between relay and the lamp optical equipment is equipped with current detection device, the output of PLC controller still is connected with the malfunction alerting ware, be equipped with the contact switch between relay in the bedroom and the lamp optical equipment, it is convenient that it has control, control promptly and accurately, low energy consumption.