
EZVIZ T4C Smoke Detector
The EZVIZ T4C (CS-T4C-A0-BG) is a battery-powered photoelectric smoke sensor for the EZVIZ smart home system. It detects smoke from all directions, sounds an 85 dB siren with a light alarm on site, and connects over Zigbee 3.0 to an EZVIZ gateway to send alerts to the EZVIZ app. It is certified to EN 14604 by TÜV.


Photoelectric 360° smoke detection: The sensor uses photoelectric smoke sensing that picks up smoke entering from any direction. EZVIZ rates one detector for an area of up to 40 m².
Loud siren and light alarm: When smoke is detected, the T4C sounds an 85 dB siren and flashes its light, so people in the building are warned on the spot.
Alerts on your phone: Paired with an EZVIZ smart home gateway, the sensor sends an instant alert to the EZVIZ app, so you know about smoke at home even when you are away.
Zigbee 3.0 with long range: The sensor uses Zigbee 3.0 on 2.4 GHz to talk to the gateway, with a communication distance of up to 200 m in an open environment.
Long battery life: A CR14250 lithium battery powers the sensor for up to 3 years, according to EZVIZ. The actual battery life depends on use and conditions.
Easy installation: The T4C is battery powered and can be mounted with double-sided adhesive or with screws.
Who it's for / Works with
Homes and small offices that use, or plan to use, an EZVIZ smart home gateway such as the EZVIZ A3, and want smoke alerts on the EZVIZ app.
Good to know
An EZVIZ smart home gateway (for example the A3) is required for app alerts and smart home features, and is sold separately.
Technical Specifications
| Model | CS-T4C-A0-BG |
| Sensor Type | Photoelectric smoke sensor |
| Alarm | 85 dB siren and light alarm |
| Detection Area | Up to 40 m² |
| Certification | EN 14604 (TÜV) |
| Protocol | Zigbee 3.0, 2.4 GHz |
| Communication Distance | Up to 200 m (open environment) |
| Battery | CR14250 lithium, DC 3 V |
| Battery Life | Up to 3 years |
| Operating Temperature | -10 °C to 55 °C, humidity up to 95% (non-condensing) |
| Installation | Adhesive or screws |
| Dimensions | Ø 87 x 35 mm |
| Weight | 80 g |
📄 Datasheet: Download the official EZVIZ T4C datasheet (PDF)
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