As I've also cheap 2 piece smoke detector, here a comparison:
- The plastic of Ei650 is smooth, therefore the dirt and steam remains in the kitchen not so easy to stick to it
- It saves the exchange of 9V battery which is empty at the cheap smoke detectors after 3 years
- You will be forced to replace the smoke detector after> 10 years, which is generally recommended for smoke alarms.
Conclusion:
Absolute buy recommendation
