Smart Wireless Doorbell with Rechargeable Lithium Battery - Voice Intercom Outdoor and Indoor Unit Included

Power supply: Outdoor unit and indoor unit are rechargeable lithium batteries Working temperature: -20 degrees ~ 55 degrees Transmission distance: about 1000 meters in the open, 20-100 meters from the wall, 1-8 floors. Working frequency: B frequency 462MHz A frequency 434MHz Working time: about 8 months for the outdoor unit, about 3 days for the indoor unit. Charging time: full about 5 hours Music ringtone: 38 ringtones Ringing volume: 3 levels of adjustable size (standby machine to adjust the volume key) Call sound: 3 levels of adjustable call size (volume key when the call is working) Main body size: the main body of the outdoor unit and indoor unit size: 116 * 56 * 18mm Waterproof cover size: 121.5*61.5*31.3mm Charging seat size: 70*56*29mm Power supply voltage : 110-220v Ringtone : Multiple ringtones Power consumption : 5w Scope of application : Indoor Type : Wireless Doorbell Color : Black,White 1V1 Packing size: 14cm*9cm*6.8cm Gross weight 310g 1V2 Packing size: 15cm*13cm*6.8cm Gross weight 440g Features: 1.Calling distance measured 1000 meters. Floor 1 floor to 8 floors. 2. Slim appearance thickness of only 18mm, similar products on the market thickness are more than 22mm, hold in the hand feel. 3.Battery 1800 mAh lithium battery, door machine and indoor machine are real 1800 mAh battery, door machine normal to work, a day press 5 times, a call 2 minutes, can work for 8 months or so, indoor machine work about 3 days. 4. The keys are made of plastic + silicone structure, the surface of high-gloss uv process, super feel. Comparison of counterparts, the use of all rubber buttons, no grade and feel. 5. Intelligent humanized design, with intercom lights and power light display, customers at a glance. 6. Two indoor machines, press the bell key another indoor machine ringing, press the TALK key directly to the intercom, when the intercom use! 7. Outside the charging seat, need to be removed from the rain cover, placed on the charging seat charging. 8. On/Off key - 0 gear - indicates that the power off A gear - A frequency B gear - B frequency ... In case of interference during the call, the door unit and the indoor unit will be switched to A or B at the same time. Function: Ultra-long distance\no noise\double charging\voice intercom\waterproof design\long time use\two-way talk one sticker/one put\doorbell/calling Waterproof No fear of the wind and rain Outdoor machine with rain cover Safe to install in outdoor area Can be fixed with double-sided tape Long Transmission Distance The effective transmission distance of 250 meters across the wall can meet most of the home use environment. Door chime with free matching Easier technological life Simple installation without wiring Outdoor unit can be mounted with screws or double-sided tape. Double-sided adhesive tape can be used as soon as it is torn and pasted.