M521 Wireless Doorbell Smart Home Security Welcome Chime Kit Door Bell Alarm LED Light Outdoor Button Battery

1. Strongly recommended:This doorbell has a novel design, ringing bell, up to 57 music tracks to choose from, adjustable volume level 4, the host has memory function, each time the doorbell prompt tone is set for the last shutdown, the host can set the doorbell button to play the fixed door ring tone.The doorbell host and the doorbell button can be coded wirelessly. Suitable for villas, clubs, leisure centers, hotels, guesthouses, families, office buildings, conference rooms and other occasions.2. Multiple collocation:The distance of 100 meters is enough to cover all the doors and windows of your house. Each wireless doorbell receiver can be paired with up to 20 magnetic door alarm sensors, and each sensor can add an unlimited number of receivers. Not only the doorbell, but also can be used as a greeter alarm.3. Wide Range and Long Distance1. Stable quality is ideal for villas, hotels, schools and other areas.2. The wireless signal will be affected by obstacles. The more obstacles, the more serious the signal loss.3. Warm tip:The button cannot be placed on an iron door because it will interfere with the signal.4. Strong penetrating powerHigh-frequency transmission technology, partition wall can also transmit signals to meet household needs without worrying about not ringing the doorbell. up to 100m distance transmission,No longer afraid of not hearing the doorbell.5.57 Ringtones Available:Different places use different ringtones, or different times use different ringtones, and have good mood every day.6. Different Song Use for Different ModeYou can set different music for different environments at the same time.57 Music Songs optional. a variety of combinations each button can set different ringtones7. Multiple collocationYou can choose different packages according to your family type.8. Two-step installationStep 1: Remove the double-sided adhesive tape and stick it on the back of the button, then stick the button on the wall.Step 2: Plug the doorbell host into the socket9. Plug Specification10. Product detailOperating voltage: 100 ~ 240 V, 50 ~ 60 Hz ACOperating power: 0.5WWireless frequency: 433MHz==========Itercom : NoPower : Electric SupplyDisplay : NoneFeature : NoneConnection Type : WirelessAlarm : YesOrigin : Mainland ChinaCertification : CESmart home platform : NoneRing Songs : 57 Music songsWorking Voltage : 100~240VWorking Power : 0.5WReceive Frequency : 433MHzReceive Distance : 80 meters

• 【 Wireless Smart Doorbell Set 】LED flashing + ringtone double alerts, worry-free use for the hearing-impaired -- "My deaf grandmother never misses visitors with the flashing light alerts!"
• 【 Ultra-long Battery Life Design 】 Outdoor buttons last for 2 years, no need for frequent battery replacement - "Never change batteries!" My doorbell has worked for 24 months straight!"
• 【IP55 waterproof outdoor button 】 Normally triggered in rainstorm weather, stable operation in extreme temperatures -30 ° C to 60 ° C -- "Withstood heavy rainstorms on my porch for over a year!"
• 【 Multi-receiver whole-house Coverage 】 Supports 1-to-4 device configuration, bedroom and kitchen simultaneously responsive -- "Hear the chime in my garage, bedroom and kitchen simultaneously!"
• "Greets delivery drivers automatically when they approach my porch!" - "greets delivery drivers automatically when they approach my porch!"