Wireless electronic doorbell with touchscreen, 52 digital music tracks, high-resolution touchscreen transmitter, long range and adjustable volume.

Technical Specifications: Receiver/Transmitter Voltage Range: AC 90–250 V; Power Consumption: ≤ 10 mW ≤ 0.01 mW; Receiver Sensitivity: -110 dBm; Volume: 100 dB; Power Consumption: ≤ 0.5 W; Transmission Mode: ASK/OOK; Battery: 12 V/23 A Alkaline Battery; Transmit Power: 0 dBm; Operating Frequency: 433.92 MHz. Installation Instructions: Radio signals can be disrupted by metal, walls, concrete, etc. (similar to a mobile phone having no or very weak reception in an elevator or enclosed metal space). In an open, interference-free environment, the maximum range is 300 meters. 1. Open the packaging and test the installation location before attaching the transmitter with double-sided tape or screws. 2. For short ranges, avoid installing the receiver on metal doors or door frames; change its location. 3. Keep the receiver away from magnetic fields and sources of interference such as induction cooktops, televisions, and speakers. 4. The closer the transmitter and receiver are to each other, even through walls, the better the signal quality.