SKU: PCB-SOLO-LTE

4G RETROFIT UPGRADE FOR LEGACY 3G GSM INTERCOMS (1 way)

£394.80 ex VAT In stock

4G-VoLTE like-for-like PCB replacement for legacy ControlFreq 3G GSM intercoms.

Works with any alarm panel, fault detection system or sensor
4 configurable alarm inputs and 4 configurable outputs
Alarms by SMS, voice call, email (WebAlarm) and DC09/Contact-ID to ARCs
4G-LTE on all four UK networks with an optional EvolveSIM
Set up by web or SMS, with over-the-air firmware updates

Connectivity (SIM) Own SIM · Included

Use your own SIM Micro SIM. Voice, SMS and data for full functionality Included

WebAlarm Monitoring Not selected

WebAlarm monitoring not selected WebAlarm cloud monitoring (optional) then from ~~£7.50/mth per unit~~ after 30 days Offer£5/mth per unit for the first year, then £7.50/mth. Setup included. 30 days' notice to cancel. £5/mth Self-managed SMS, voice call and ARC signalling direct from the unit Included OEM Branded UI Your own branded monitoring service, with our support. One-off integration fee plus annual licence POA

The first 12 months of WebAlarm are paid today. We'll send you a GoCardless direct debit mandate after your order for the following years.

Optional add-ons 0 added

Subtotal £394.80 ex VAT

£473.76 inc VAT (20%)

We're a B2B solution provider. Trade customers can sign up for trade pricing.

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Talk to an engineer · 020 3478 0784

Specifications

Technical details

4G-VoLTE like-for-like PCB replacement for legacy ControlFreq 3G GSM intercoms.

Network	4G-VoLTE with 3G/2G fallback
Module	Global 4G VoLTE module
SIM	Micro SIM. Voice, SMS and data SIMs give full functionality; data-only SIMs do not support voice calls
Antenna	SMA male connector
Connectivity	EvolveSIM optional. Per SIM per month: 100MB, 50 min voice, 25 SMS. No carryover. UK and EU, ControlFreq hardware only. Not for intercoms or door entry.
Event transmission	SMS, voice call, email (WebAlarm), DC09/Contact-ID (ARC)

Power input (no battery)	12–24V DC
Power input (with battery)	13.8–15V DC
Power consumption	250mA transmitting / 40mA idle
Backup battery	12V 1.2Ah (optional)
Auxiliary output	12V DC, 300mA max

Inputs	4 alarm inputs (configurable), plus input disable and tamper
Outputs	4 digital outputs (configurable)
Phone line output	PSTN simulator
Status indicators	4 LEDs: blue signal, red fault/alarm/error, green input status, amber network status

Enclosure	Compact metal, surface mounted (not IP rated)
Optional enclosure	IP56
Dimensions	155 × 220 × 58 mm
Operating temperature	-10°C to +50°C
Weight	60g (PCB) / 180g

Product code	PRO+4G
Grade	Grade 2
Configuration	Web (mobile-friendly) and SMS
Firmware updates	Over-the-air (F-OTA)
Cloud monitoring	WebAlarm (optional)
Warranty	3 years

How it works · with WebAlarm cloud

From panel to phone, in one path.

WebAlarm is optional. It logs fire, panic, intruder, leak and equipment-failure alarms in real time, alerts on mains power, battery and signal loss, and posts to your Slack channels by default. It also takes Contact-ID and SIA-DC09 signals from devices made by others.

Explore WebAlarm

Alarm panel

Any panel or sensor triggers one of 4 inputs
PRO+4G

Picks up the signal and sends it over 4G
4G-VoLTE network

Secure mobile connectivity.
WebAlarm cloud

Logs fire, panic, intruder, leak and fault alarms, plus power, battery and signal, in real time
You / your ARC

Slack, SMS, voice call, email, or DC09/Contact-ID to your ARC

WebAlarm cloud

See every site from one screen.

Alarms, power and signal for every unit, on a map, in a table and in reports.

Explore WebAlarm

Questions, answered.

Can't find what you need? Call 020 3478 0784 or email hello@controlfreq.co.uk

What is this board?

A 4G-VoLTE like-for-like PCB replacement for legacy ControlFreq 3G GSM intercoms. The page describes a 4G PCB on an aluminium frame with a microphone and speaker, and with no button included, for a 1-way intercom.

Why does the page say a 3G intercom needs it?

The page says the 3G shutdown has left many of these devices unable to work, and that this board retrofits them to 4G-VoLTE.

Integration & OEM

A control layer built around your operation.

We add management, visibility and control on top of the alarm, communication and access control systems you already run. From white-label portals to full OEM builds, we work end to end.