Usage Tips:RF433R is an RF wireless radio frequency receiver, using SYN531R radio frequency receiver, working frequency is 433.92MHz (using ASK modulation) commonly used by wireless controllers. Built-in PCB antenna, stable receiving signal distance up to 10M, typical receiving sensitivity It is -109dBm, receiving rate 1Kbps. Excellent selectivity and noise suppression. The exquisite and compact housing design can be embedded in a variety of radio frequency remote control applications. It is suitable for security alarm, wireless automatic meter reading, home and industrial automation, remote remote control, wireless data transmission and other system fields. Specifications: Operating frequency: 433.92MHz Applications: Building Automation Security alarm Home and industrial automation Remote control Wireless data transmission and other system fields Colour:White Material:plastic Due to different batches, there may be differences in product appearance and printed text, which not affect use Cable color random, don't accept the specified color Package Contents: 1 x RF433R Unit 1 x HY2.0-4P Cable 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.