Meross CS11-EU smoke and carbon monoxide detector
Meross CS11-EU is a compact but highly effective sensor equipped with two independent sensors - photoelectric for smoke detection and electrochemical for CO monitoring. Such a solution guarantees a quick response in case of emergency! At the same time, the device is small and discreet, while the built-in CR123A battery provides a long operating time - up to about 10 years.

Immediate response to danger
The sensor complies with EN14604 and EN50291 standards, which confirms its efficiency and quality of operation. The device responds automatically when CO levels reach dangerous values - for example, at a concentration of 300 ppm the alarm sounds in less than 3 minutes. A loud signal of over 85 dB guarantees that the device will be heard even by sleeping household members.

Reliability and accuracy
If the sensor detects both smoke and carbon monoxide, it will sound first for smoke and then for CO. In addition, the device detects both fast-burning and slow-burning fires, minimizing false alarms.

Simple installation without cables
The detector is powered by a built-in 3V CR123A battery with a lifespan of up to 10 years. This, combined with its smart design, means that its installation takes no more than a few minutes and does not require the help of an electrician. All you have to do is screw the mounting bracket to the ceiling or wall, then place the device on it - and you're ready to go!

Intuitive traffic lights
The Meross CS11-EU is equipped with a tri-color LED that clearly communicates the device's status. A green light indicates readiness for operation, an orange light indicates low battery or fault, and a red light indicates alarm activation or test mode. Operating the sensor is extremely simple - just press a button to perform a test or silence the alarm.

Thoughtful design and discretion
The slim, white housing with a round shape makes the sensor fit perfectly into any interior. Thanks to its compact size, it is discreet, while effectively protecting you and your loved ones from an invisible threat.

Included
- Smoke and carbon monoxide detector
- Support base
- Screw set
- User manual
Specifications:
| Manufacturer | Meross |
|---|
| Model | CS11-EU |
|---|
| Certifications | EN14604:2005/AC:2008, EN50291-1:2018 |
|---|
| Sensor type | Smoke: photoelectric- CO: electrochemical, |
|---|
| Power supply | Lithium battery CR123A DC 3 V (1600 mAh, non-replaceable) |
|---|
| Operating current | <30 uA (standby), <70 mA (alarm) |
|---|
| Alarm volume level | 85 dB(A) at 3 m distance |
|---|
| Smoke sensitivity | 0.09-0.17 dB/m |
|---|
| CO sensitivity | 50 ppm - 60-90 minutes- 100 ppm - 10-40 minutes- 300 ppm - < 3 minutes, |
|---|
| Low battery level | 2.6 ± 0.1V |
|---|
| Mute time | About 10 minutes |
|---|
| Operating temperature | From -10°C to 40°C |
|---|
| Working environment humidity | 15-95% RH, non-condensing |
|---|