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Crestron C2N-UNI8IO Universal Keypad Interface
The C2N-UNI8IO is how a third-party keypad, a set of dry contacts, or a bank of indicator LEDs joins a Cresnet system. Eight digital inputs read 0 to 24 VDC with a 10k pull-up to 5 V, and eight open-drain outputs sink 100 mA each at 24 VDC. At roughly two inches square and two thirds of an inch deep it fits inside the back box it is serving.
A DIP switch per output engages a 1k current-limiting resistor, dropping each output to 5 mA at 5 VDC, which is what you want when the load is an indicator LED rather than a relay. Inputs and outputs arrive on 10-pin IDC connectors with 22 AWG flying leads; the module draws half a watt from the Cresnet network and supports touch-settable ID.
| Digital Inputs | (8) rated 0-24 VDC with 10k ohm pull-up to 5 VDC; logic low threshold 1 V, logic high threshold 3.7 V |
|---|---|
| Digital Outputs | (8) open drain, 100 mA at 24 VDC each, 500 mA combined maximum |
| Current Limit Mode | (1) 8-position DIP switch engages a 1k ohm resistor per output, limiting each to 5 mA at 5 VDC for LEDs |
| Connectors | (2) 10-pin 0.1 in. IDC connectors with 22 AWG flying leads; (1) 4-pin 3.5 mm Cresnet client port |
| Cresnet Power Usage | 0.5 W (0.02 A at 24 VDC) |
| Temperature | 32 deg to 104 degF (0 deg to 40 degC) |
| Dimensions | 2.06 in. H x 2.05 in. W x 0.68 in. D (52.3 x 51.9 x 17.3 mm) |
| Weight | 0.815 oz (23.1 g) |
