Five full-duplex users per base
Up to five DECT6 or DECT7 full-duplex headsets connect to a single base. Full duplex means crew members talk over each other the way they do in person, instead of waiting for a channel.
Per base station
Built & serviced in Lemoyne, PA — by firefighters, since 2009
Wireless base station
The DECT7 base that turns 500-Series headsets into an apparatus intercom — five full-duplex users per base, with external antenna and multi-base support.
One WB505R.V2 carries five full-duplex DECT6 or DECT7 headsets. Six riding positions means two bases, and apparatus that run large crews are routinely built with more than one. Count the seats that need to talk, not the seats that exist.
The base ships with a duck antenna. Where the crew works away from the apparatus or the body blocks the signal, an external antenna moves the radiating element outside: a 12-foot magnet-mount for a temporary install, or a 17-foot permanent mount. External antennas are for exterior use only.
The $1,375 figure is the FIRECOM 2024 USA & Canada retail list price, effective May 1, 2024. Mounting kits, the 12V charging cable, the RJ45 run to the intercom, and the wall supply are separate line items. EFES quotes the base, the mounting hardware, and the install together. Call (800) 504-2044.

Product overview
The WB505R.V2 is the piece that makes a FIRECOM system wireless. It pairs up to five DECT6 or DECT7 full-duplex headsets per base, and it wires back to a 5x00D digital intercom over RJ45 so those headsets reach the apparatus radios and auxiliary devices.
DECT7 is the reason the audio holds up. It gives high-definition audio between the crew rather than the compressed, clipped sound analog systems produce once the pump is working — which matters most on the messages you cannot afford to repeat.
Two features change what the base can do beyond the cab. Headset to Multi-Base Station lets a 500-Series headset pair with up to four WB505R base stations, so a firefighter moves between rigs and connects to the nearby crew instead of dropping off the system. And in training mode, a single base station supports up to 100 listen-only students with up to three full-duplex instructor positions, with students transitioning to open talk positions using PTT.
The base is one layer of the package. See the 507, 505, and 503 crew headsets for the crew side, 5000-Series digital intercoms for radio and auxiliary connections, and FIRECOM parts and accessories for antennas, mounting kits, and cables.
What the base does
The WB505R.V2 covers three jobs that would otherwise take three different products: the apparatus intercom, multi-rig coverage, and the training academy.
Up to five DECT6 or DECT7 full-duplex headsets connect to a single base. Full duplex means crew members talk over each other the way they do in person, instead of waiting for a channel.
Per base station
Pair a 500-Series wireless headset with up to four WB505R wireless base stations. A firefighter who moves between rigs connects to the crew that is nearby rather than losing the system.
Up to four bases
A 12-foot magnet-mount or 17-foot permanent-mount external antenna extends coverage and lets the radiating element be placed where the apparatus body is not in the way. External antennas are for exterior use only.
Optional
One base station carries up to 100 listen-only students, with up to three full-duplex instructor positions. Students transition to open talk positions with PTT, which makes a classroom or a drill ground workable on one base.
Up to 100 students
High-definition audio between crew members, which is what makes mission-critical traffic understandable rather than merely audible when the apparatus is working.
The base connects to a 5x00D digital intercom over a standard RJ45 run, which is how headsets reach the apparatus radios, the auxiliary inputs, and the pump-panel position.
RJ45

Count the seats that need to talk
At a glance
Capabilities and pricing as published in the FIRECOM 2024 USA & Canada retail price list, effective May 1, 2024. Mounting, cabling, and install labor are quoted per apparatus.
| Specification | Detail |
|---|---|
| Model | WB505R.V2 |
| Headsets per base | Up to five DECT6 or DECT7 full-duplex headsets |
| Multi-base pairing | One headset pairs with up to four base stations |
| Training capacity | Up to 100 listen-only students, up to 3 full-duplex instructor positions |
| Intercom connection | RJ45 to a 5x00D digital intercom |
| Specification | Detail |
|---|---|
| Antenna | Duck antenna included; 12 ft magnet-mount or 17 ft permanent-mount optional |
| 2024 retail price | $1,375 |
| Mounting kit | Generation 3 mounting kit, 114-0127-00, sold separately |
| Install and total system price | Quoted per apparatus |
Before you request a quote
Divide the riding positions that need to talk by five and round up. An engine with a driver, an officer, and four crew positions needs two WB505R.V2 bases. Positions that only need to listen do not change the count on a normal system — but tell us anyway, because training configurations are counted differently.
Not usually inside the cab. You want one when the crew works away from the apparatus, when the body or a compartment blocks the base, or when a mounting location is otherwise the only option. A 12-foot magnet-mount antenna suits a temporary or fleet-swapped install; the 17-foot permanent mount is the fixed answer. Both are for exterior use only.
The WB505R.V2 connects to a 5x00D digital intercom over RJ45, and the 5000-Series is described by FIRECOM as 100% retrofit compatible with existing FIRECOM installations. Send us the model number on your current intercom and we will confirm the path before you buy anything.
Yes. A 500-Series headset pairs with up to four WB505R base stations, so someone who moves from an engine to a rescue connects to the nearby crew instead of dropping off the system.
That is exactly what the training mode is for. A single base station supports up to 100 listen-only students and up to three full-duplex instructor positions, with students transitioning to open talk positions using PTT. Tell us your class sizes and we will size it.
Specified around the apparatus
Send the apparatus, the riding positions, the radios, and where the base can physically live, and we will quote the base stations, antennas, mounting hardware, and the run back to the intercom together.
Call (800) 504-2044 or request a quote. EFES is at 440 Oak Street, Lemoyne, Pennsylvania.
