Installation Steps for SK-WIO-1 Wiegand Interface
This unit is designed to connect Wiegand output devices, such as long range card readers (RK-WL), keypads (SK-KPM/S)
and biometric readers and non-Secura Key readers to the Peripheral Bus of Secura Key’s NOVA.16 Access Control Panel.
(It will also work in any system using Secura Key’s SR Protocol over an RS-485 bus.) It receives data and power from the
NOVA.16 panel, and has all the input and output connections for a controlled door or gate, including a Wiegand Input, latch
and aux relay outputs, and two “alarm” inputs (for REX, Door Monitor, etc.)
1. If mounting the unit outdoors, install it in a water-tight enclosure. The unit can also be mounted inside a standard
2-S electrical junction box.
2. Adhere the foam tape to the back of the circuit board to prevent circuit components from coming in contact with any
metal, such as the enclosure walls, which could short circuit the unit.
3. Run field wiring to the enclosure or junction box and feed through conduit openings.
4. Connect RS-485 data, latch and aux relays, inputs and outputs, and connect the Wiegand cable from the card reader
or other Wiegand output device.
5. Connect DC power after all other connections are made.
6. Use the adhesive-backed foam tape (supplied with the unit) to tape it to the side or back of the enclosure.
INSTALLATION DIAGRAM
SK-WIO PCBA
ADHESIVE BACKED
FOAM TAPE
J-BOX OR READER ENCLOSURE
SPECIFICATIONS
POWER REQUIREMENTS
12-14VDC, 100 mA max.
Use reader power from NOVA.16 or RK-PS 12VDC 500 mA supply
INPUTS AND OUTPUTS
Latch Relay:
10A @ 200VAC, 8A @ 30VDC
Aux Relay:
2A @ 30 VDC, 0.5A @ 125 VAC
Cable Type: 18/2, 250 ft. (76.2 m)
Inputs 1 & 2:
Ground to Activate
Cable Type: 2 cond. 22-24 AWG, Shielded, 250 ft. (76.2 m)
Wiegand:
SIA Standard Interface
Cable Type: 4-7 cond. depending on inputs used, 22-24 AWG, Shielded, 500 ft. (152.4 m)
ENVIRONMENT
Ambient Temperature:
-40° to +70° C (-40° to +158° F)
Humidity – 0-95% Non-condensing
COMMUNICATIONS
RS 485 – Host Driven SR Protocol
Cable Type – 2 twisted pair, 22-24 AWG or CAT 5, 5e or 6, 4000 ft. (1219 m) total system
SK-WIO-1 Wiegand Interface Instructions
