"A deterrent has no value unless the enemy has some suspicion of its existence"

I originally used a mix of Dakota Alert sensors:  six 9 volt PIR sensors ($60 each) and three solar IR beam sensors ($250 each, now discontinued, ha).   These were a maintenance experiment which had erratic charging due to foliage, dust, hard water deposits.  False positives dropped almost to zero after I removed them. Otherwise, the Dakota system has been outstanding.

I replaced them with more PIR sensors and a portable monitor for easier configuration and an alert history.  I also upgraded from standard 600 mAh 9 volt batteries to rechargeable Li-Po 1000 mAh batteries which should increase replacement time to two years.

I also added solar power, motion-sensor lights for $90 (14 units at $6 each).   They're configured into three zones which light up my yard like a Nazi prison camp and stay lit on subsequent movements.   Their charge is too low (2 to 3 minutes of power) and I've had to reposition them around plant growth but I like their effect and they don't wake me up. They are weatherproof, no wires, no maintenance and should last 10 to 15 years.

The Arlo cameras are surprisingly trouble-free. In the past year, I did two manual reboots and cleaned some lenses.  I get a few wind-based false positives but they're never flagged as a person. I'm impressed.

Post-COVID Home Security, Part 1 - 2020
Post-COVID Home Security, Part 2 - 2021Post-COVID Home Security, Part 1 -2020Home Security, Part 2 I sold my house in 2004 and didn’t care about homesecurity until my new purchase in 2018. And even then I felt no urgency untilthe pandemic appeared, followed by riots and
Post-COVID Home Security, Part 2 - 2021
Post-COVID Home Security, Part 1 - 2020Home Security, Part 2 I sold my house in2004 and didn’t care about home security until my new purchase in 2018. Andeventhen I felt no urgency until the pandemic appeared, followed by riots andlooting. I researched smart locks for
Post-COVID Home Security, Part 4 - 2023
Dakota Alert added a new sensor type to their 4000 alarm series about a year ago, so last month I ordered one to test. I love the 4000 system. It’s simple, cheap, reliable, has no external dependencies. The solar-powered breakbeam sensors were an expensive disappointment but otherwise, the syste…