uxcell 433MHz Wireless Communication Transmitter Receiver Module Link Kit Product Name : Wireless Transmitter Receiver Module;Power : DC 5V;Frequency : 433MHz Modulation Mode : OOK;Receiving Sensitivity : -105dBm Transmitter Board Size : 18 x 18mm/0.7" x 0.7"(L*W);Receiver Board Size : 30 x 14mm/1.2" x 0.55"(L*W) Material : Plastic, Electronic Part;Color : Green Net Weight : 5g;Package : 1 x Wireless Transmitter Receiver Module Set