secrui doorbell – wireless doorbells with 2 bells for home/classroom – waterproof electronic doorbell with 32 chimes, flash lights, 5 volume levels – over 1000ft coverage secrui <p> <b>wireless doorbell description:</b></p> <p>secrui wireless doorbell is widely used in most of area.such as villa.store,hotel.office.hospital etc. </p> <p> secrui factory was found in 2004 ,specilized in home security industry for almost 14 years.</p> <p>our products have applied for ce rohs fcc etc. goods was exported all over the world. </p> <p>secrui doorbell can be used as not only a simple alert device,but also paging system.</p> <p> <b>how to install our wireless doorbell: </b><br></p> <p>1. stick the double sided tape on the back of button </p> <p> 2. stick the transmitter button on the wall as your wish (outdoor) </p> <p> 3. plug our mini doorbell receiver into standard mains outlet </p> <p> <b>packing list : </b><br></p> <p> 1x push button </p> <p> 2x doorbell receivers </p> <p> 1 x set screws </p> <br>note: please pair the receiver and the button before stick button on the wall.do not expose the doorbell receiver to rain,fire,excess moisture or snow .