Remarks The VCC voltage must be consistent with the working voltage of the module, and the power supply must be filtered; the antenna has a great influence on the receiving effect of the module, it is to connect a 1/4-wavelength antenna, generally a 50-ohm single-core wire is used, and the length of the antenna is 433M About 17cm; The position of the antenna also affects the receiving effect of the module. When installing, the antenna should be as straight as possible, far away from the shield, high voltage, and interference source; the receiving frequency, decoding and oscillation resistance should be matched with the emission during use. Rectangle:receiving module: model:MX-05V voltage:DC5V Quiescent current:4MA Receiving frequency:433.92MHZ Receiving sensitivity:-105DB External antenna:32CM single core Wire, wound into a spiral transmitter Square:Transmitting module: model:MX--03V Transmission distance:20-200 meters (different voltage, different effects) voltage:3.5-12V Working mode:AM transmission Rate:4KB/S Transmitting power:10mW Transmitting frequency:433M External antenna:25cm ordinary multi-core or single-core wire. Pin arrangement from left to right:(DATA; VCC; GND) Application environment:remote control switch, receiving module, motorcycle, Car anti-theft products, home anti-theft products, electric doors, rolling doors, , remote control sockets, remote control LEDs, remote control audio, remote control electric doors, remote control garage doors, remote control retractable doors, remote control rolling gates, sliding doors, remote control door openers, door closers, etc. Door control system, remote control curtain, alarm host, alarm, remote control motorcycle, remote control electric car,etc. Depending on the productbatch, PCB board parts may be different, but the function is the same Colour:As Shown Material:PC+Metal Size:Transmitting module:30x14x7mm,receiving module:19x19mm Package Contents: 10Set * 433M Super Regenerative Module Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.