The Secure SCW100-000 is the official Wi-Fi extender module for Secure (Horstmann) HC2.4-platform heating controls, including the C1727 and H3747 programmable thermostat displays. It plugs directly into the back of a compatible control unit, adding home network connectivity to a system that otherwise communicates locally over Bluetooth.
Once fitted and connected to a home Wi-Fi network, the module allows the heating and hot water schedule to be viewed and adjusted remotely from anywhere using the free Secure Controls app, rather than only from within Bluetooth range of the control unit. This makes it a straightforward upgrade path for households who want app-based heating control without replacing their existing Secure programmer.
HC2.4
Compatible Platform
Compatibility
The SCW100-000 is an accessory module designed specifically for Secure's HC2.4 heating control platform, most commonly used with the C1727 and H3747 programmable controls. It is not a standalone product and requires a compatible Secure heating control already installed to function.
Remote Heating Control
Connects your compatible Secure control unit to your home Wi-Fi network, enabling heating and hot water control from anywhere via the Secure Controls app.
Simple Plug-In Fitting
Fits directly onto the rear connector of compatible HC2.4 controls with no additional wiring required at the module itself.
Works Alongside Bluetooth
Complements the existing Bluetooth connection used for local control, so both in-home and remote access remain available.
App Schedule Management
Once connected, the app allows the 7-day heating and hot water schedule to be viewed and modified remotely, in addition to one-touch Home/Away switching.
Status & Alert Visibility
Supports the app's instant alerts for battery life, communication errors, and service reminders when the control is online.
Compact White Housing
Small, discreet white module designed to sit neatly with the Secure control unit it plugs into.
General
Product Type
Wi-Fi extender / connectivity module
Fitting
Plug-in module to compatible control unit
Compatibility
Compatible Platform
HC2.4 heating control range
Confirmed Compatible Models
Secure C1727, Secure H3747
Companion App
Secure Controls app (iOS and Android)
Local Connection
Bluetooth (built into compatible control unit)
Connectivity
Wireless Band
2.4GHz Wi-Fi
Function
Adds remote/away-from-home app access to Bluetooth-only control
Good to Know
The Secure Controls app works over local Bluetooth without any internet connection for at-home control. Adding this Wi-Fi module is what unlocks away-from-home scheduling, so it's worth fitting even if remote access isn't needed on day one.
Will the SCW100-000 work with any Secure heating control?
No. It is designed for the HC2.4 platform and is confirmed compatible with the Secure C1727 and H3747 programmable controls. Check your existing control model before ordering.
Do I need this module to use the Secure Controls app?
No. The app can control a compatible unit over Bluetooth without this module, but only while you're within Bluetooth range of the control. This module is needed for remote, away-from-home access.
Does the module need its own internet connection or SIM?
No. It connects to your existing home Wi-Fi network using the 2.4GHz band; there's no separate subscription or data connection to arrange.
Can I fit this myself?
The module is designed to plug directly into the rear of a compatible control unit. As with any work on a heating control system, if you're unsure, ask a qualified heating engineer or electrician to fit it.
What happens if my Wi-Fi goes down?
Local Bluetooth control from the Secure Controls app continues to work as normal within range. Only remote access away from the property depends on the Wi-Fi connection being active.
