# KAK 3.5" Digital Door Peephole Camera Electronic Door Viewer Bell 120 Degree Wide Angle HD Screen Home Security System Hardware # SPECIFICATIONS Angle: 120Degree Brand Name: NONE Certificate: CE,FCC,Rohs Certification: CE Features: Easy to install Function: Hidden style peephole with wide view angle High-concerned chemical: none Long Standby Time: Only 4pcs AAA batteries for Power supply. Energy conservation, environmental protection.Low Power Alert. Material: Zinc Alloy Model Number: KAK-SF520A Origin: Mainland China Power Suppiler: 4pcs AAA Batteries ( Not included ) Product: Digital Door Viewer, Smart Door Bell Screen: 3 Inch LCD Screen Type: Door Viewers ![](https://ae01.alicdn.com/kf/S80355b82833642a6b0a63d920d66db49k.jpg) ![](https://ae01.alicdn.com/kf/Se675b341575844898e22d8e8f38e2abbi.jpg)![](https://ae01.alicdn.com/kf/Sdfde144a2143439ea87a06c76fcc7459x.jpg)![](https://ae01.alicdn.com/kf/Sdba59b874b5a4e6b8c8905ce6da6bd08Y.jpg) # **PARAMETERS** LCD screen: 3.5 inch Resolution: 480\*320 Real viewing angle: 120 degree Door hole Diameter: 14-28mm Door thickness: 40-100mm Indoor device size: diamter 32mm Outdoor device size: 118\*62mm Material: Zinc Alloy Power supply: 4pcs AAA batteries( Not included ) Package includes: 1 x Outdoor Unit 1 x Indoor Unit 1 x Pack of screws 1 x Metal bracket ![](https://ae01.alicdn.com/kf/Sc05ee817af414f50a2a08e17ef86c8ea1.jpg) **Hidden Style Peephole with Wide View Angle** This digital peephole looks very similar to normal optical peephole, thus it can avoid getting involved in troubles concerning invasion of privacy; 120 degrees super wide viewing angle provides you a further viewing vision. ![](https://ae01.alicdn.com/kf/S727f6f96025f4416b484c42eeb948502z.jpg) TFT Color DISPLAY & One Button Start This door viewer is 3.5 inches LCD Color Display Screen, with HD resolution of 480 x 320p, shows images or videos clearly and smoothly. It is more convenient and quick to use, and will automatically change to standby state after 15S with no operation, and can be started with one press at any time, which is very suitable for the elderly and short children to operate and see situation outdoors clearly. ![](https://ae01.alicdn.com/kf/S35e4788c6bab44ed8976d9d227a43b6cB.jpg) Convenient to Use Easy to install, very easy to replace your old optical peephole with this digital peephole viewer kit, no extra screws needed. It's simple but practical home security device for you. ![](https://ae01.alicdn.com/kf/S54edc1629f504fe0b347b916d1ac7b62J.jpg) Energy Conservation Long Standby Time Only 4pcs AAA batteries for Power supply. Do not need to charge, not worry about the trouble that the home blackouts bring. Energy conservation, environmental protection.Low Power Alert. Please notice we don't provide battery, it is common battery type in daily time, so you can buy it easily in local store. ![](https://ae01.alicdn.com/kf/S73accebdffd347d2b2cccf77a976144eb.jpg) Upgraded new version digital peephole Our store type is updated new version peephole, product material is thicken, back plate is more solid so it will hold the pee hole and screen more stable, and more durable for long years! ![](https://ae01.alicdn.com/kf/S3814829a2fd649d4863223b6c6f41c9ck.jpg) ![](https://ae01.alicdn.com/kf/Sb5ab82eb97f8436182278ff33be105baa.jpg)![](https://ae01.alicdn.com/kf/Sad0268d006574a6097e67bd0434f52aaB.jpg)![](https://ae01.alicdn.com/kf/Sa3b3e8fb91b048459a4fda92eb9e01faB.jpg)![](https://ae01.alicdn.com/kf/Sfddace7dfe18451f93ab9a5d61630ce2x.jpg)![](https://ae01.alicdn.com/kf/S6ab38e65568c4cd18062e33dc14fdb2a4.jpg) ## Details - **Price:** 49.89 EUR - 53.18 EUR - **Vendor:** Tidesmit - **Tags:** video doorbells ## Variants | Variant | Price | Available | |---------|-------|-----------| | Complete Set / spain | 51.49 EUR | In stock | | Complete Set / China Mainland | 53.18 EUR | In stock | | Complete Set / CZECH REPUBLIC | 49.89 EUR | In stock | ## Images - KAK 3.5" Digital Door Peephole Camera Electronic Door Viewer Bell 120 Degree Wide Angle HD Screen Home Security System Hardware - KAK 3.5" Digital Door Peephole Camera Electronic Door Viewer Bell 120 Degree Wide Angle HD Screen Home Security System Hardware - KAK 3.5" Digital Door Peephole Camera Electronic Door Viewer Bell 120 Degree Wide Angle HD Screen Home Security System Hardware - KAK 3.5" Digital Door Peephole Camera Electronic Door Viewer Bell 120 Degree Wide Angle HD Screen Home Security System Hardware - KAK 3.5" Digital Door Peephole Camera Electronic Door Viewer Bell 120 Degree Wide Angle HD Screen Home Security System Hardware - KAK 3.5" Digital Door Peephole Camera Electronic Door Viewer Bell 120 Degree Wide Angle HD Screen Home Security System Hardware - KAK 3.5" Digital Door Peephole Camera Electronic Door Viewer Bell 120 Degree Wide Angle HD Screen Home Security System Hardware - KAK 3.5" Digital Door Peephole Camera Electronic Door Viewer Bell 120 Degree Wide Angle HD Screen Home Security System Hardware - KAK 3.5" Digital Door Peephole Camera Electronic Door Viewer Bell 120 Degree Wide Angle HD Screen Home Security System Hardware - KAK 3.5" Digital Door Peephole Camera Electronic Door Viewer Bell 120 Degree Wide Angle HD Screen Home Security System Hardware --- > Source: [Tidesmit](https://tidesmit.com/products/kak-3-5-digital-door-peephole-camera-electronic-door-viewer-bell-120-degree-wide-angle-hd-screen-home-security-system-hardware) > Updated: 2026-08-25