System function mode, press SET button for 3 seconds to enter system setup, the pressure switch, then press the SET button in order to display the following function mode. After all the function mode setting is completed, press (ON / OFF) key to setting run automatically stored in a computer chip. 5 lightning test simulates lightning phenomena look to electronic pressure switch has no effect, test time of 30 minutes, the electronic pressure switch properly used. Pressure switches, pressure switches sor, tour grace (certified merchants) are provided by TU Technology Co., Ltd. Beijing tour. Beijing Tour En Technology Co., Ltd. (www.bjyouen.com) (www.bjyouen.com) is specialized in "pressure transmitters, pressure switches, flow meters, flow switches, temperature transmitters, temperature switches," the enterprise, the company Adhering to the "honesty, hard service" concept, to provide you with the highest quality products and services. Welcome to inquire! Contact: Ms Fung.