1.9GHz/DECT 6.0 digital monitoring technology for 100% clear and private connections. Each transmitter is individually coded to only communicate with its receiver to ensure privacy. over 1600+ foot range, parent unit talk back and page feature, starry night light, two-way communication, sensitivity adjustment, secure sound lights, volume control, out-of-range indicator, low battery indicator. Comes with 2 A/C adapters and 3 rechargeable batteries for the parent unit. WEB ID: 4918714