Alarm.com Battery Doorbell Camera (ADC-VDB781B) - Data Sheet
The ADC-VDB781B battery-powered doorbell lets you expand your market by enabling installs anywhere—no wiring needed. Advanced AI features like Familiar Face analytics and package detection create easy upsell opportunities and more recurring revenue. With a versatile, replaceable battery pack and seamless integration—no hub required—installations are simple and service is efficient. The 781B helps you win more business and deliver unmatched value to your customers.
Key features
- Install at any entrance—no wires needed—plus enjoy multi-month battery life
- Never miss a thing with smart alerts for people, vehicles, packages, and even familiar faces
- See everything at your doorstep, with crystal-clear 2.4 MP video and an expansive 148° x 148° field of view
- Protect your home proactively with Perimeter Guard® warning sounds and the ability to talk to visitors from anywhere
- Easily recharge, swap batteries, or opt for wired charging and chime support
Included accessories
- ADC Universal Battery Pack
- ADC-VDB781B wallplate (with pre-assembled set screw and wire terminal screws)
- 5º tilt wedge (optional)
- Security screw tool
- M3.5 wallplate mounting screws 20 mm length (x2)
- M3.5 drywall anchors 25 mm length (x2)
- Conical anchors for concrete installations (x2)
- M3 wedge mounting screws (x2)
- Wallplate rubber spacers (x2)
- USB-C charging cord
- Installation card with scannable QR code
Additional accessories
| Accessory name | Accessory SKU |
|---|---|
| Accessory Battery Pack for Alarm.com Indoor/Outdoor Battery Camera | ADC-VACC-BAT-2LIB18650 |
| VDB781B Wedge Mount Kit | ADC-VDBA-781B-WMK |
Specifications
| Max resolution | 1536 x 1536 |
|---|---|
| Recording compression | H.264 |
| Ingress protection | IP54 |
| Field of View | 148° Horizontal, 148° Vertical |
| Wi-Fi connectivity |
|
| Ethernet compatibility | Incompatible |
| Battery capacity | 6450 mAh |
| Charging time | Approximately 5 hours |
| Wired charging | AC transformer input at doorbell terminals:
|
| Motion detection mechanism | Passive infrared sensor |
| Image sensor | 1/3" Color CMOS |
| IR range | Up to 15 feet (~5 meters) |
| Image adjustments | Flip, brightness, contrast, saturation, sharpness, exposure |
| Operating temperature | -4°F to 113°F (-20°C to 45°C) |
| Operating humidity | 20% – 100% non-condensing RH |
| Dimensions (W × L × D) | 2.0 × 6.3 × 1.34" (51.3 × 160 × 34 mm) |
| Compliance | FCC, IC, CE, RCM |
LED reference guide
Note: When operating on battery power, the status LED will light up in response to motion or when the camera’s state is altered (i.e., button press events, booting on, firmware upgrades, and deterrence responses).
| LED pattern | Description |
|---|---|
|
Off
|
Power off or standby |
|
Solid green
|
Connected to Alarm.com |
|
Blinking green
|
Local network connection |
|
Blinking red
|
Power on, camera booting |
|
Solid red
|
No local or internet connection |
|
Solid blue
|
Low battery |
|
Blinking white
|
BLE mode and AP mode (press and hold the button for 30-35 seconds) |
|
Blinking blue
|
WPS mode (press and hold button for 35-40 seconds) |
|
Blinking yellow
|
Power cycling (press and hold button for 40-45 seconds) |
|
Blinking red and green
|
Reverting to factory default settings (press and hold the button for 45-50 seconds) |
|
Blinking green and blue
|
Firmware updating |
|
Blinking red and blue
|
Perimeter Guard camera light alert activation |
Battery pack charging
| LED pattern | Description |
|---|---|
|
Solid red
|
Charging |
|
Blinking red and blue
|
Charging failed |
|
Solid blue
|
Charged and connected to Alarm.com |