RF Remote Control Blog

Someone would like a remote control to switch on and off his lamp via controlling a contactor. He drew a picture to illustrate his idea. Maybe it is not so convenient to him to remote control lamp directly, so he choose to control his lamp via a contactor. We recommend him a 1 channel AC remote switch with memory function (S1MU-AC220+C-2). This 1 channel ac rf memory remote controller operates in toggle, momentary and latched control mode (set the mode as you like freely). With function of memory, if the power is cut off, the relay will return automatically to the previous status after the power is restored. It is great for hard to reach lights or other electrical devices, remote distance up to 100m (theoretically). It is applied to control lights, motors, fans, electrically operated doors / locks / windows / blinds / cars or other appliances with voltage AC 110~240V or DC 0~28V. According his requirement, we have this following diagram. Initial state: A, B = Normally Closed; B, C...

Question from customer: I want to use the remote control to replace the button of my contactor. Since the switch will be activated rarely, is it possible to test the communication with the remote to be sure that the transmitter’s battery and receiver work correctly? Answer: We came up with a good idea that it can replace your manual switch to remote control contactor and to test whether the transmitter’s battery and receiver work correctly. So we recommend normally open/ closed 2 channel AC remote controller (S2U-AC220+C-2). The normally open/closed contact terminals are applied to universal power supply. In other word, normally open /closed contact terminals are as a switch for device. You need to supply DC or AC power to your controlled devices. The maximum current is 10ampere for each channel and its working distance is about 100m. We got a plan for your problem. At first, it is the wiring. Look at the following wiring diagram. A&B terminals are the normally closed term...