4 x 4 Small Keyboard Board Compatible with Door Bell<br /><br /><br />    Specifications<br />General<br />	 Type: Keyboard Module                                                	<br />Certification<br />	 Certificate: CE， RoHS， FCC                                                	<br />Weight and Size<br />	 Product Weight: 0.022 kg                                                  <br />                        Package Weight: 0.073 kg                                                  <br />                        Product Size(L x W x H): 6.8 x 6.6 x 1.0 cm / 2.67 x 2.59 x 0.39 inches                                                  <br />                        Package Size(L x W x H): 12.3 x 8.1 x 2.0 cm / 4.83 x 3.18 x 0.79 inches                                                	<br />Package Contents<br />	 Package Contents: 1 x Small Keyboard Module                                                	<br /><br /><br /><br />                                                                                            <br />