A:  Regarding you issue, please refer to the following steps to reset and reprogram the sensor to the receiver unit once again. To ERASE memory: 1. Unplug AC adaptor from the receiver. 2. Open the back cover, press and hold the “Learn button” from the receiver. Do not release the learn button until step 4. 3. While holding it down, plug in AC adaptor to the receiver. Once AC adaptor plugged in, you may release the learn button from the receiver. To program sensors to zones: 1. The green LED will be on indicating it is turned on. 2. Press and hold the learn button for 5 seconds again, until both green LED and zone 1 red LED flash. You may now release the learn button. 3. If you would like to program the sensor to zone 1, activate the sensor while the zone 1 red LED is flashing. Press the SET button on the back of the sensor to activate it. 4. If you would like to program the sensor to other zones, press the learn button again after pressing to zone 1, until the red LED flashes at the zone you want to program the sensor to, then activate the sensor. 5. Once the sensor is programmed, the green LED will be steadily on and none of the red zone LEDs will be on.

A:  birds and even the sun occasionally causes false trips I even have one squirrel that likes to watch the light flash as he gets close to the sensor

A:  the correct answer is listed, reset the sensor,using the instructions listed, I accidently set one sensor to both spot 2 and three, Since another sensor was also in spot two when the number three sensor would trip it would also light the light on spot two , After resetting all the sensors I have had no other issues, except I also have a squirrel who thinks the sensor is a mirror and likes to watch it blink. I love my system and it alerts me when someone comes in any of my multiple driveways , with corresponding beeps associated with that driveway sensor. Sure saves me a lot of unexpected guests. I also have the house next door alarmed and it alerted me to squatters who thought they could sneak in and live rent free. I got them out in time to prevent an evection requirement. That alone was work way more than the cost

A:  The motion sensor from the HA-300 kit and the motion sensor model HA-434TL are the same with the same spec.

A:  This motion sensor operates by battery.

A:  The HA-434RTL comes with 1 receiver and 1 motion sensor. The HA-300 comes with one receiver and 2 motion sensors. All Specs are the same.

A:  The model HA-300 is a kit, comes with 2 motion sensors and 1 receiver and the model HA-434TL is only a sensor. Therefore, both motion sensors are the same.

A:  It is desgned to use alkaline batteries but if you wish to use rechargeables feel free to do so.

A:  Regarding your question, we don't recommend using rechargeable batteries for the sensors because rechargeable batteries should be substituted in high drain devices like digital cameras, MP3 players, portable electronics, etc. Alkaline batteries are better suited for slow-drain devices such as remote controls and sensors. Also alkaline batteries are 1.5VDC for AA and 9VDC and rechargeable, (NiMh, NiCd) are 1.2VDC and 8.4VDC. You may use rechargeable Lithium Ion batteries that are 9VDC.