Up to ten wireless base stations
Connect up to 10 wireless base stations, which is how a site covers ground rather than a single room. Base stations are added as the operation grows instead of replacing the intercom.
SON203, SON204
Built & serviced in Lemoyne, PA — by firefighters, since 2009
Digital intercoms
The installed hub: up to ten wireless base stations, four mobile radios, and four auxiliary devices such as cell phones, with an IP67 remote head.
Four models separated by connection count. Count the wireless base stations first, then the mobile radios, then the auxiliary devices. SON201 handles six connections and one radio. SON204 handles ten and four. Buy for the system you are building rather than the one you have today.
Every model has a matching remote head — SON201RH through SON204RH — and all of them are IP67 rated. A remote head puts intercom control at a second position rather than only at the intercom itself, which is what an operator away from the cab actually needs.
Displayed prices reproduce the supplied Sonetics 2022 price list, effective July 7, 2022. Install labour is not in that list, so EFES quotes the intercom, the base stations, the radio interfaces, and the install together once the vehicle or facility has been reviewed. Call (800) 504-2044.

Product overview
The SON200-Series is the installed hub of a Sonetics system. It connects up to 10 wireless base stations, four mobile radios, and four auxiliary devices such as cell phones — which is what turns a set of wireless headsets into an integrated communications solution rather than a private conversation between five people.
Four models cover four sizes of install. SON201 carries six headset or base-station connections and one radio. SON202 carries eight and two. SON203 carries ten and three. SON204 carries ten and four. The step between them is connection count, not capability, so the sizing question is simply how many base stations, radios, and auxiliary devices this vehicle or facility will end up with.
Each model has a matching remote head. SON201RH through SON204RH are IP67 rated, and they exist so that intercom control lives where the operator is rather than where the intercom was mounted. On a vehicle that usually means a second working position; in a facility it means the control room and the floor.
The auxiliary connections are worth planning for. Four auxiliary devices including cell phones means a phone call or a recorded feed becomes part of the team's audio instead of something one person holds to their ear while everyone waits.
The intercom sits between the crew and the radios. See the SON150 wireless base station and the APX377 headsets for the crew side, and the SON104 analog intercom when four base stations and one radio is all the install needs.
What the intercom does
One installed unit handles the wireless side, the radio side, and the auxiliary audio for a vehicle or a facility.
Connect up to 10 wireless base stations, which is how a site covers ground rather than a single room. Base stations are added as the operation grows instead of replacing the intercom.
SON203, SON204
Connect up to four mobile radios so the team reaches multiple channels or multiple agencies from the same headsets, without anyone switching a radio by hand.
SON204
Connect up to four auxiliary devices such as cell phones, which brings a call or a recorded feed into the team's audio rather than leaving it with one person.
SON204
SON201RH through SON204RH put intercom control at a second position and are IP67 rated, so a remote head can live somewhere that gets wet and dirty.
Matching per model
Install Sonetics in a vehicle or facility and connect wireless headsets with land mobile radios for an integrated communications solution rather than two systems side by side.
Add access points and headsets as you grow, integrate with your existing communications infrastructure, and connect with multiple teams in the same work area.

Count the base stations, radios, and devices
Model lineup
Connection counts as published in the supplied Sonetics 2022 USA & Canada price list, effective July 7, 2022. Prices reproduce that list and are not current quotes; EFES confirms pricing and install on your quote.
Swipe to compare
| Model | Headset / base connections | Radio connections | Remote head | Price |
|---|---|---|---|---|
| SON204 | 10 | 4 | SON204RH | $2,195 |
| SON203 | 10 | 3 | SON203RH | $1,880 |
| SON202 | 8 | 2 | SON202RH | $1,450 |
| SON201 | 6 | 1 | SON201RH | $1,095 |
| Shared across the line | Up to 4 auxiliary devices | Cell phone capable | IP67 remote heads | — |
Before you request a quote
Count three numbers: wireless base stations, mobile radios, and auxiliary devices. Six connections and one radio is a SON201. Eight and two is a SON202. Ten and three is a SON203. Ten and four is a SON204. If you are between two, take the larger — adding a radio later is common and swapping an intercom is not.
It puts intercom control at a second position instead of only at the intercom itself. Every model has a matching head — SON201RH through SON204RH — and all are IP67 rated, so the head can be mounted somewhere that gets wet and dirty rather than somewhere convenient.
Yes. The SON200-Series connects up to four auxiliary devices such as cell phones, so a call becomes part of the team's audio rather than something one person relays. Tell us what you want patched in and we will include the right adapter.
Sonetics states compatibility with more than 400 radio models from manufacturers including Motorola, GE, Ericsson, Harris, ICOM, Kenwood, Maxon, Midland, Relm, Standard, Tait, and Vertex. Send us the exact make and model of the mobile radios in the vehicle and we will confirm the interface before you order.
The SON104 is a four-position analog intercom: up to four wireless base stations, up to 20 wireless headsets, and one optional two-way radio. If that covers the install, it is the smaller and simpler answer. If you need more than one radio, auxiliary devices, or a remote head, you want the SON200-Series.
Quoted and installed by EFES
Send the vehicle or the site, the number of base stations the coverage needs, every mobile radio in the install, and anything you want patched in.
We will size the intercom, spec the remote head, and quote the install with it.
Call (800) 504-2044 or request a quote. EFES is at 440 Oak Street, Lemoyne, Pennsylvania.
