Main Features:<br />Wireless transmitter module and receiver module， burglar alarm transmitter， a product for Arduino that works with official Arduino boards<br />The 433MHz RF link kit is consisted of transmitter and receiver<br />Transmitor input voltage: 3 - 12V<br /><br />    Specifications<br />General<br />  Material: FR4                                                  <br />                        Compatibility: Ardunio                                                 <br />Electronic Components<br />  Architecture: Arduino                                                 <br />Weight and Size<br />  Product Weight: 5 g                                                  <br />                        Package Weight: 0.055 kg                                                  <br />                        Product Size(L x W x H): 3.0 x 1.4 x 0.7 cm / 1.2 x 0.6 x 0.3 inches                                                  <br />                        Package Size(L x W x H): 8.0 x 6.0 x 2.0 cm                                                 <br />Package Contents<br />  Package Contents: 1 x Transmitter Module， 1 x Receiver Module                                                 <br /><br /><br /><br />                                                <br />