Sell [KOKIYA2] Welcom Chime Bell Door Bell Entry Alert Alarm PIR Adjustable Volume for Shop best price

Description: Infrared sensor adopt to digital fuzzy treatment, automatic temperature compensation,Radio frequency anti-interference,has low rate of false alarm. 4 volume levels are adjustable, 32 ringtones to choose from. Power supply: 3pcs AAA batteries or 9-12V power supply (not included). 3 major functions: welcome , wireless doorbell, guard defence. Easy installation convenient operation. Specification: Material: Plastic Sensing Distance 6-8 Meters Loudness 85db+5db Installation Height 1.5-2 Meters Working Temperature: -10-50 (°C) Detection Distance: 10 (m) Working Voltage: 9-15 (v) Size Chart: Size: 7.5×8×4.5cm/2.95×3.15×1.77inch Package Includes: 1 Piece Welcom Chime Bell 1 Pack Screws Note: 1. Please allow slightly error due to manual measurement. 2. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you! 3. Wish you a wonderful on-line shopping!