What it is for
Pair of boxes that carries video, USB, network and power over one cable, from the table to the display. Used in Cafeteria · Pantry, large · Pantry and 2 more.
Installed by year
Ports
7 portsTerminal block41 in, 1 outHDMI11 inUSB-C1RJ4511 out
Front
Rear
VideoUSBPowerHDBaseTOtherAudio
Every port, in detail
| # | Port | Connector | Carries | Direction | Where |
|---|---|---|---|---|---|
| 1 | hdmi-in-1Front (room-side) faceplate connector; connects to an HDMI source. | HDMI | video, audio | In | Front |
| 2 | usb-c-1Front faceplate connector; DisplayPort Alt Mode video input, also used to reach the WP-20CT's internal web pages via a connected browser; charges a connected USB-PD 2.0 source up to 60W when the optional 20V supply is fitted. | USB-C | video, USB, power | Both ways | Front |
| 3 | power-inInside the wall box; required if USB-C charging is used and no PoE-providing receiver is present. | Terminal block | power | In | Rear |
| 4 | hdbaset-1Connects to the HDBT IN port on a receiver (e.g. TP-580R) or a PoE-providing receiver (e.g. TP-789R); when connected to a PoE-providing receiver a local power supply is not required (except for USB-C charging). | RJ45 | HDBaseT, video, audio, PoE | Out | Rear |
| 5 | rs232-1Local control of the WP-20CT itself (Tx, Rx, common G); 115200 baud, 8 data bits, 1 stop bit, no parity, ASCII command format. | Terminal block | rs232 | Both ways | Rear |
| 6 | rs232-2Extends a bidirectional RS-232 signal to the far end over the HDBaseT link, even with no A/V signal present; baud rate 300 to 115200. | Terminal block | rs232 | Both ways | Rear |
| 7 | audio-out-1Connects to an unbalanced analog audio acceptor. | Terminal block | audio | Out | Rear |
Spaces using it
4 spacesCHI 13.15 PantryDUB 3.01 ReceptionDUB 5.01 Welcome loungeMEL 8.01 Reception
Space types that use it
4 units in 4 spaces at 3 officesNotes
- Draws 0.6 A on the 12 V supply, or 3.7 A on the optional 20 V supply that enables 60 W laptop charging over USB-C.
- Kramer's own manual download failed; faces come from a copy of the manual hosted elsewhere.
What the manufacturer doesn't say
- No PoE standard stated for power over the HDBaseT cable.
- The left-right order of the rear connectors is not certain.
Sources
- WP-20CT 4K60 4:2:0 HDMI & USB-C Wall-Plate Auto Switcher/Transmitter over Long-Reach HDBaseT - Kramer product page
Specifications - WP-20CT Quick Start Guide
Port labels, faces and panel layout - Kramer WP-20CT product page (US)
Specifications - Kramer WP-20CT user manual (hosted mirror)
Port labels, faces and panel layout
Each model was read twice, independently, and the two readings reconciled against the manufacturer's text.