Q:All the warm water heating cycle, control the pump switch is what kind of good, is the time switch, or time relay, what is the difference between the principle, there is the price is how much?

See you with the time relay price of each twenty or thirty yuan or so

Q:With two time relay how to achieve 10 seconds repeated switch

Of course, you have to use two single-time relay combination can also be used, according to each relay you call to 10 seconds, you can make the first relay time 10s, 10s to the internal relay pull connected to the first two Relay power supply, the second relay began timing, the first two 10s time to pull after the signal to the first relay to reset, so the first relay reset, the internal disconnect, the second relay is also broken Electric, this time the first relay to re-count. Always cycle, to take the amount of switch can be in the first relay action contact to obtain

Q:During the day automatically power off, night fixed time bright, called what switch?

Timing switch, with the same time as the lights a few lights, a few points off.

Q:Freezer inside the dew switch, can open for a long time?

If the weather is dry, there is no condensation, you can turn off.

Q:How to view and delete the computer switch machine time record?

Very simple way to solve it is that you remember your father last time with the computer and then when you put the machine on the time to tune the last time your father with the computer time and then start a computer start again after the time Back to normal time

Q:What time is it open to switch the door and have a weekend break?

Post office is usually 9 o'clock to 5 o'clock open the door, the weekend is not a holiday.

Q:Even want to use two mechanical relays after interlocking control of two-way thyristor and then control the motor is reversing, do not know the delay time enough?

Here to distinguish between categories, the use of occasions, power size, the external circuit, under normal circumstances the relay action time in 20MS or so. There are special in the Us level, there are a few seconds there are delay, depending on the specific model.

Q:Want a switch, the switch time can be adjusted, the time setting is milliseconds. Or a device with this function is also available

Directly to buy a programmable controller can meet your requirements.

Q:With a SJ11 relay and normally open proximity switch to form a control circuit, to close the switch in place after a certain period of time after the cycle of work

2, controlled by the time relay, delayed a few seconds after the restart. That is, the (speed) motor restarts and the chain device re-operates. 3, "restart" instruction issued by the time relay.

Q:Time timer switch time timer switch

The earliest use of the timing tool is hourglass or water leakage, but after the birth of the watch mature, people began to try to use this new timing tool to improve the timer, to achieve the purpose of accurate control of time. In 1876, the British surgeon Sauer acquired a patent for a timing device to control the switch of the gas street lights. It uses the mechanical clock to drive the switch to control the gas valve. At first the last week of the winding, 1918 years after the use of electricity clock, you do not have a winding.