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Electronics noob(would like help)

The Doctor
By The Doctor
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Hi, im trying to figure out a way to setup a motion sensor outside my home office door so that I know when people are about to enter. I just disassembled a "Mace model 80357" motion sensor and with my little knowledge in electronics, have some ideas that may or may not work. First, the MS originally used an LED to show whether there was motion or not, the connection that was used to power the LED have a red and a black wire. There is also a built in wireless transmitter that(from what my research shows) transmitts at 433Hz. Could I get a 433Hz receiver and hook that up to an LED in my office? Or maybe get a transmitter and hook it up to the LED connection?

Thanks!

My PC:

CPU: Xeon E3 1230 V3(Haswell) @ 3.7GHz Motherboard: AsRock B85M-ITX RAM: 8GB Corsair Vengeance LP Blue @ 1600MHz Storage: Intel 520 Series 120(Boot), Seagate Barracuda 500GB @ 7200RPM, Western Digital Caviar Green 1TB @ 5400RPM GPU: ZOTAC GTX 970 @ 1.4GHz Case: Node 304 Power Supply: CX430

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