Package contents : Six transmitters/push buttons (each one includes a CR2032 3V battery) One receiver/main unit(powered by three AA LR6 batteries) Usage Ideal for office,hospital,restaurant and etc where services are needed within six zones. Installation Operation : Load three AA LR6 batteries on receiver before use. Install transmitters at the place where need service,install receiver at the place where provides service. Switch receiver to CHIME,it will ring and indicate the corresponding push button number via sign light and this direction will improve work efficiency and service quality. Two sounds for option.Main unit will alarm if switch it to ALARM. The product has been coded before delivery.In case the transmitters don't work,you can follow the instructions below to code again. .Coding a.Slide the switch to"OFF"position and then slide it to either"ALARM"or"CHIME". b.Use a needle to press down on the "Code button"for 5 seconds and then release.The 6 indicator lights on the front panel of the receiver will flash slowly(2 seconds/flash)to indicate that it has entered into the coding state. c.Press the button of one transmitter you want to code,the corresponding light will flash and at the same time a sound with duration of 2 seconds will be heard to indicate that the coding is successful. d.Repeat this process to add more transmitters(Max.of 6 transmitters can be coded.)Once done,press the code button to exit the coding state. e.The coding operation needs to be completed within 30 seconds,if 30 seconds have elapsed and it exits the coding state,you have to back to the coding process.