• 【Wireless Design】No wiring required, easy installation, especially suitable for homes that don't want to damage wall aesthetics or where wiring is difficult.
• 【Extended Range Communication】Strong signal penetration capability maintains stable connection up to 150-200m, even through multiple walls.
• 【Rich Sound Options】45 different harmonic ringtones with 4-level volume adjustment including silent mode for personalized preferences.
• 【Waterproof Design】IP44 rating ensures reliable outdoor performance in various weather conditions.
• 【Reliable Home Doorbell Kit】Transmitter & receiver set designed for home, apartment, office, and villa use, providing convenient and safe visitor alerts for daily life.

Specifications:

• Working Frequency: 433MHz ± 0.5MHz
• Connection Range: 150-200m (open area)
• Power Supply (Transmitter): 12V 23A Alkaline Battery
• Power Supply (Receiver): 4 x AAA Batteries (DC 6V, not included)
• Number of Ringtones: 45 harmonic tones
• Waterproof Level: IP44 (transmitter)
• Product Dimensions: Transmitter: 44 x 19 x 77mm, Receiver: 65 x 27 x 100mm