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| Product Description:
This unit is a serial-interface keypad that can be used with either the 49-451 2-zone alarm system or the 49-485 8-zone alarm system. |
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| Designed at:
Tandy Electronics Design Sold at: Radio Shack as 49-452 |
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Credits:
Electronics - Doug Deeds Firmware - Dusty Nidey Mechanical - Morris Humphreys |