Door Intercom

Built-in 58 Ringtone, press the "Next" or "Back" button in the coupling mode to select a ringtone. You can customize different ringtones for different recipients. 5-stage adjustable volume of 0-115 dB. The mute mode is suitable for people with babies or removal needs, the maximum volume lets you miss a visitor. The blue LED light will flicker when working, so you will not miss visitors even when wearing headphones, and it is also friendly to the hearing impaired. The doorbell has its own memory function, that is, after each power failure, the doorbell will save the melody and volume that have been set, and there is no need to reset it when it is powered on again. The transmitter has an IP55 waterproof rating, and the working environment is -20°C to +60°C, which can cope with all kinds of weather in normal environments. Using 23A 12V alkaline batteries, one battery can be used for three years, and its life span is greatly increased compared with button batteries, reducing the trouble of frequently updating batteries. Easy installation: 1. Remove the insulating film behind the battery 2. Use the supplied screws for installation 3. Use the supplied double-sided adhesive strip for attaching the supplied double-sided adhesive tape All required installation tools are included in the package. As an expandable and practical wireless doorbell combination for your home, you can add recipients or transmitters of the same type and set different ringtones for different channels or recipients so you know at which door you have a visit. How to connect the transmitter to the receiver？ Before installation, remove the transmitter's protective plastic insulating film 1. Please choose your favorite ringtone before connecting. 2. Press the volume button for about 5 seconds until the LED indicator flashes. 3. Press the transmitter button in 5 seconds to send a signal to the receiver. If pairing is successful, the receiver will automatically play the selected melody.

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Size: 7.5cm * 3.3cm * 14.4cm Storage medium: 32GB TF card Material: PCB Specifications: Easy to install, no wiring required Watch remotely anytime, anywhere Mobile normal alarm, APP real-time reminder APP remote conversation Two-way voice intercom Million HD Infrared night vision Remote capture  

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Working voltage: 7.2V DC 1800MAH lithium battery Step frequency: 2.5 / 6.25 / 10 / 12.5 / 20 / 25KHz Frequency stability: ± 2.5PPM Antenna 50Ω Dimensions: (110mm × 58mm × 32mm) (height x width x thickness) Output power 8W Current: ≤1.4A (4W) Modulation sensitivity: 8-12mV Modulation distortion: <10% Modulation limit Broadband <5KHz, Narrowband <2.5KHz Sub audio / digital sub audio frequency deviation: 0.75KHz ± 50Hz, 0.37KHz ± 30Hz Stray radiation: <7μW Modulation method: 16KΦF3E / 11KΦF3E Modulation characteristics: 6dB / incremental frequency Receiver Reference sensitivity: -122dBm (12dB SINAD) Audio power: 1W Audio distortion: <10% Modulation receiving bandwidth: 5K Clutter suppression: ≥65dB Adjacent channel selectivity (broadband, narrowband): ≥65dB, ≥60dB Intermodulation (wideband, narrowband): ≥60dB, ≥55dB Blocking: ≥85dB Standard: 1 host, 1 antenna, 1 battery, 1 back clip, 1 charger, 1 lanyard, 1 manual.

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