I bought these smoke detectors to the matching radio module (EI 605 MRF-D) at an auction house for 87 (2 detectors plus 2 wireless modules): Instructions: easy to understand but confusing Installation: battery needs to be connected, was for me as a woman very difficult, but for my husband no problem Radio: was built Networking: super reception (! Through thick concrete walls round), all smoke detectors give alarm in succession, it can be seen how many detectors are connected and are what alert False positive: never before Other: the smoke detector tests itself (visually recognizable), flashing lights do not disturb, alarm switched off without the battery must be removed (big switches on the detector), Low battery warning (visual and acoustic) Conclusion: I previously had a low cost model, but after countless false alarms and unreliable Fernetzung I decided for this one. I am very satisfied so far (have him for 4 weeks). The review will be extended with respect to next year. The battery life and the possibly false positives (hope there will not be) So far: just buy it!
