
EZVIZ T9C Smart Siren
The EZVIZ T9C (model CS-T9C-A0-BG) is a wireless smart siren for the EZVIZ smart home system. It connects over ZigBee 3.0 to the EZVIZ Home Gateway A3 and sounds an alarm of 90 to 105 dB when a linked EZVIZ sensor is triggered. It runs on four CR123A batteries or an external 12 V DC supply, and its IP54 housing is made for both indoor and outdoor use.



Adjustable alarm sound and duration: You can set the alarm volume between 90 dB and 105 dB and the alarm duration between 5 and 180 seconds. This lets you choose a loud, long alarm for an outdoor or shop installation, or a lower, shorter one inside the home.
Tamper and anti-moving alarm: If someone tampers with the siren or moves it from its place, it sounds an alarm to warn you. Both functions are off by default and can be turned on when you set the siren up.
Weatherproof IP54 design: The siren is rated IP54, so it can be installed outdoors as well as indoors. It is mounted on the wall.
Battery or DC power: The T9C takes four CR123A batteries, so it can be installed where there is no power outlet. It can also be powered from an external 12 V DC supply, and the app gives a low-battery reminder.
Control from the EZVIZ App: Once paired with the gateway, the siren can be set to sound when any of your EZVIZ smart home sensors is triggered. The EZVIZ App lets you arm and disarm the system and receive notifications.
Who it's for / Works with
EZVIZ smart home systems built on the EZVIZ Home Gateway A3 and EZVIZ sensors. After it is connected to the gateway, it can also link with EZVIZ wired cameras launched with firmware version 5.3.8 or later; EZVIZ advises checking the sensor page in the EZVIZ App for the final camera compatibility.
Good to know
The EZVIZ Home Gateway A3 is required for the EZVIZ App features and is not included with the siren. Battery life depends on the alarm volume, duration and how often the alarm sounds.
Technical Specifications
| Model | CS-T9C-A0-BG |
| Device Type | Smart siren |
| Wireless Protocol | ZigBee 3.0 |
| Alarm Volume | 90 to 105 dB (adjustable) |
| Alarm Duration | 5 to 180 s (adjustable) |
| Tamper Alarm | Supported (off by default) |
| Moving Alarm | Supported (off by default) |
| Battery | 4 x CR123A |
| External Power | 12 V DC |
| IP Rating | IP54 |
| Installation | Wall mounted |
| Dimensions | Ø 134 x 51.5 mm |
| Weight | 437.54 g (647.50 g with package) |
📄 Datasheet: Download the official EZVIZ T9C datasheet (PDF)
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