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White rectangular video doorbell with black camera lens and silver button, slim profile

eufy

eufy Video Doorbell C31 2K FHD Battery Hardwire HomeBase S380

SKU CH-NSMT-78H5V

A 2K FHD smart doorbell with dual battery and hardwire power, 6500mAh quick-release cell, 5-second pre-roll recording, and HomeBase S380 integration

  • Connection protocolWireless
  • Battery packIncluded
  • Product typeSmart Doorbell
  • Product dimensions5.83 × 2.07 × 1.23 in
  • Product weight0.198857 lb (0.09 kg)
  • 2K FHD 4:3 view shows visitors clearly
  • Pop-up video call lets you answer from anywhere
  • Quick-release 6500mAh battery or hardwire for 24/7 recording
  • Works with HomeBase 380, Alexa and Google Assistant
  • Compact 5.83 x 2.07 x 1.23 inch design weighs 0.198857lb

eufy Video Doorbell C31 2K FHD

The eufy Video Doorbell C31 delivers 2K FHD resolution with a 4:3 aspect ratio for detailed visitor views day and night. It operates on a rechargeable 6500mAh battery or connects to existing doorbell wiring for continuous power. The device integrates with the eufy Security app and supports both Amazon Alexa and Google Assistant for voice control.

HomeBase S380 and Chime Integration

Pairing the doorbell with the HomeBase S380 enables local storage and expanded smart-home features without monthly fees. The system also works with the eufy Minibase Chime T8023 for audible alerts inside the home. Hardwiring unlocks 24/7 recording and a five-second pre-roll buffer for motion events, while battery mode offers wire-free placement flexibility.

Ideal for DIY Installers Wanting Flexible Power

This doorbell suits homeowners who want a choice between battery convenience and hardwired reliability with pre-roll recording. It is not suited for buyers who require a fully wireless chime solution without purchasing the separate Minibase accessory or those who need professional installation included.

How it compares

Measured against everything we stock in Keyless Entry Locks & Readers, at today’s prices. Recalculated every night.

Price $83.99
Cheaper than about 58% of the 274 comparable items (median $105.49).

Specifications

Product
Brand nameEufy Security
Model nameDoorbell C31
Part numberC31
Product typeSmart Doorbell
Connectivity
Connection protocolWireless
Power
Battery packIncluded
Size & build
Product dimensions5.83 × 2.07 × 1.23 in
Product weight0.198857 lb (0.09 kg)
Compatibility
Alexa supportYes
Google Assistant supportYes
Software
App supportYes

Questions about this item

How often will the 6500mAh quick-release battery need recharging under typical use?

The rechargeable 6500mAh battery is designed for easy removal and charging; actual interval depends on motion frequency and whether the unit is also hardwired for trickle charge.

What limits continuous 24/7 recording on this doorbell?

Continuous 24/7 recording and 5-second pre-roll are only available when the doorbell is hardwired; on battery power alone the unit records motion-triggered clips instead.

How warm does the doorbell get and how much power does it draw when hardwired for all-day recording?

Hardwired operation enables constant 24/7 recording with minimal heat rise; the unit draws low-voltage doorbell transformer power and runs silently with no fan.

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