GymMaster Hardware List
On this page you'll find pictures and descriptions for the most common GymMaster hardware used for access control & check-in. Use this guide to identify which hardware you have, then select this hardware on troubleshooting articles to tailor the troubleshooting instructions to your specific hardware. If your hardware isn't in this list then it may be legacy. Contact the GymMaster support team for troubleshooting.
Gatekeeper 5
Serial: v5.x.x
Help:
Controller unit for the access control system. This model is encased in a silver metal box, with and LCD screen on the top. GYMMASTER Gatekeeper is printed on the front plate of the Gatekeeper. This side also contains the power supply port, two reader ports, two relay ports, an Ethernet port, and the USB ports. The version number can be found on the main board, inside the Gatekeeper. Remove the back plate, and look on the bottom circuit board below the LCD screen, the version number is printed just below the GymMaster logo. e.g. VER-5.0.1
Gatekeeper 4
Serial: V1.0, V1.1, V1.2, V1.3
Help:
Controller unit for the access control system. This model is encased in a silver metal box, with GYMMASTER Gatekeeper printed on one side. This side also contains a row a status LEDs, USB ports, and an Ethernet port. The opposite side contains a power supply port and two reader ports. The version number can be found on the main board, inside the Gatekeeper. Remove the metal panel from the side with the Ethernet and USB ports, and look on the circuit board directly beneath the Ethernet port. e.g. v1.3
Gatekeeper Mini 4
Serial: NA
Help:
Controller unit for reception check in, and Point of Sale. This model is encased in a small black metal box. One side of the case is holey for ventaliation. The USB ports are 3.0, recognisable from the blue colouring. The power port takes a Male USB Type C plug.
Sentinel Door
Serial: HW Ver. 1.x
Help:
These readers are generally wall mounted, black in colour, with a hexagon in the center and GYMMASTER branding at the bottom. Behind the hexagon is a coloured LED which is usually yellow, green or red. To remove the reader from the wall, press in the two clips at the bottom of the reader to remove the case. This will reveal the screws, which can be unscrewed to remove the reader. Once the reader is off the wall you'll be able to find its version number on the back.
Cidron
Serial: SC93100
Help:
These readers are generally wall mounted, and black in colour. There are four different models, two narrow and two wider, with each of the sizes having a keypad variation. These readers have an LED backlight, viewable from the ring around the outside of the reader, or behind the keys in the respective model. These LEDs are by default blue, but can also be green, red, or not lit. The part number can be found on the back of the reader, once it is removed from the wall. Removing these readers from the wall can be a little tricky. Using a thin flat piece of metal, carefully wedge apart the rubber casing down the split in the right or left sides, about half way up.
CN485
Serial: CND56xxxxx
Help:
These readers are generally wall mounted, dark grey in colour, with an LED in the center. The LED is by default green, but can also be red, or not lit. These readers have a hexagonal G logo in the bottom right corner. Take the reader off the wall to review the back, and the wires. To remove the reader there are two flat clips in the bottom that need to be unclipped. The back of the reader will have two green ports, one for reader connections and one for a relay. You will also be able to see the part no, which should match the serial number above.
CV485
Serial: COD56xxx
Help:
These readers are generally wall mounted, dark grey in colour, with an LED in the center. The LED is by default green, but can also be red, or not lit. There are two sizes, one wider and one more narrow. These readers some times have a hexagonal G logo in the bottom right corner. Take the reader off the wall to review the back, and the wires. To remove the narrow reader there is a small screw in the bottom side, for the wider version there are two flat clips in the bottom. The back of the reader will have one green port for reader connections, and no relay. You will also be able to see the part no, which should match the serial number above.
Desktop Reader
Serial: HL-RC500
Help:
A flat black reader that is made to sit on a reception desk. The reader has one LED in the top right corner, which can be red, green or not lit. The reader has one port, which is a Female USB Port Type-A 2.0. The bottom of the reader should have a sticker which states the part number, which should match the serial number above.
Sentinel Desktop
Serial: SENTINELD
Help:
A flat black reader that is made to sit on a reception desk. The reader has one LED in the top right corner, which can be red, green or not lit and a Gymmaster logo on the top left corner. The reader has one port, which is a Female USB Port Type-B 2.0. No serial number, part number or sticker is found on the case.
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