, Product performance and Uses: The relay is an electromagnetic principles or mechanical principles to achieve delay automatic switch control device. It is kind of a lot of air damping type, electric, and electronic and other type. Second, the time relay principle early air damping time relay AC circuits often, it is the principle of air through the orifice throttle delay action. It consists of three parts of the electromagnetic system, the delay mechanism and contacts. Any relay sensing element action signal actuator (contact), the delay time before the relay action called time relay is the most commonly used for time relay into LSI it is the use of resistive and capacitive principle to delay action. Transformer buck often used in AC circuits, integrated circuit as the core of the device, its output using a small electromagnetic relay makes the product's performance and reliability than good, early air damping time relay products timing accuracy and controllability improve a lot. With the popularity of the microcontroller, the manufacturers have adopted the microcontroller for time relay core devices, controllable and timing accuracy, by software to adjust, so the next time the relay will be by a microcontroller replaced. 1, the time range Sec: 1,3,6,12,30,60 Min: 3,6,12,30,60 Hr: killed at the 3rd, 6th, 12th, 24th, output contacts: limit 1C 5A Power Consumption : 2VA 4, using ambient temperature: -10 degrees to +55 degrees.