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RS485 Network Access Control Controller,Four-Door Unidirectional Access Motherboard, Remote Open,Fire Linkage with Power Supply Box (2 Door)
- Model #: GENRB0G44TCHF2
- $124.19 –
- More options from $124.19
- Free Shipping
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4K 8-Channel PoE Network Video Recorder NVR, Embedded Plug & Play DS-7608NI-I2/8P(2021 New Version)
- Model #: CLOXB08B7S4JJG
- $718.99 –
- Free Shipping
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3" USB to RS-232 (9-pin) (25-Pin) Serial Adapter with USB Extension Cable - Add a Serial Port to your DVR system
- Model #: BL-800A
- $25.00 –
- $7.49 Shipping