General description The 433 MHz Self-Generating Wireless Doorbell is designed for smart home applications, featuring 38 different ringtones and a user-friendly interface. It operates efficiently with low power consumption and offers a reliable transmission range, making it suitable for various environments. Technical specifications Music: 38 ringtones Frequency: 433 MHz Power consumption: 0.25 W Operating range (open area): 150 m Music volume: 50 dB/1 m Power supply: AC 100V-230V, 50/60Hz Plug Type: EU Plug Color: White Material: ABS Compatibility and accessories Compatible with EU Plug standards, applicable in countries such as Indonesia, Germany, France, Spain, and Italy. Package Contents: 1 * Receiver, 1 * Transmitter Other information Note: Light reflection and different displays may cause the color of the item in the picture to differ slightly from the actual product. The measurement allowed error is +/- 1-3 cm.