Introduction to the Ajax SpaceControl S 4‑Button Keyfob
Ajax SpaceControl S (110753.04.WH1)is a compact, professional wireless keyfob designed to give fast, reliable control of Ajax alarm hubs. With four programmable buttons for Arm, Disarm, Night (partial arm) and Panic (SOS), two‑way encrypted communication over Ajax’s Jeweller radio at 868 MHz, and a slim, lightweight body, the SpaceControl S aims to combine convenience with commercial‑grade security. It is positioned for both residential and commercial use, offering installer‑friendly pairing, configurable accidental‑press protection, and LED feedback so you always know whether a command has been delivered.
Key features at a glance
- Four programmable buttons— Arm, Disarm, Night/Partial, Panic.
- Two‑way Jeweller radio— encrypted, anti‑spoofing authentication at 868 MHz (region dependent).
- Long radio range— up to 1,000–1,300 m in open space (environment dependent).
- Accidental‑press protection— configurable double‑press or long‑press to reduce false activations.
- Pre‑installed CR2032 battery— multi‑year battery life under normal use and low weight (~13 g).
- Commercial security— meets EN 50131 Grade 2 (check local certification for definitive marks).
Detailed specifications and benefits
The SpaceControl S packs a focused set of specifications aimed at reliability and usability. The unit measures 65 × 37 × 10 mm and weighs roughly 13 g, making it pocketable and unobtrusive on a keyring. It uses a single CR2032 battery that ships pre‑installed and is commonly quoted to last multiple years (typically 3–5 years under normal user patterns). That reduces maintenance and replacement frequency for households and businesses alike.
Communication is handled via Ajax’s Jeweller two‑way encrypted radio protocol on the regional 868 MHz band. Jeweller provides quick command delivery with confirmation feedback to the user via a small LED on the keyfob. Security features include anti‑spoofing/authentication and jamming detection implemented at the system level, and the product is listed as meeting EN 50131 Grade 2, indicating suitability for many commercial and higher‑security residential applications.
The declared open‑space radio range is up to approximately 1,300 m, though real‑world performance depends on building materials, interference and hub placement. Installers often find this range sufficient for multi‑room homes, small business premises or where the hub is centrally located. The device commonly lists IP32 protection and operating temperature between −10 °C and +40 °C — users should consult the official Ajax datasheet or manual for region‑specific ratings and limits.
Practical benefits extend beyond specs: the internal magnet allows quick mounting on a metal surface or for a tidy storage spot near an entrance, and the accidental‑press protection (configurable to require a double press or a long press) helps avoid false alarms. The LED feedback shows command delivery, improving user confidence that the system received the input.
Use cases and scenarios where the SpaceControl S excels
- Everyday home security— For families and flat dwellers who want straightforward arming/disarming without opening an app, the SpaceControl S offers one‑touch convenience. The night/partial arm makes it easy to secure the perimeter while keeping internal motion sensors inactive during overnight hours.
- Small businesses and retail— Small shops, offices and cafés frequently benefit from Grade 2 security accessories combined with a simple, visible control point for staff. The panic button adds a quick duress option for staff facing threatening situations.
- Care settings and personal safety— The SOS panic command can be used as a personal safety trigger in assisted living or for staff working alone. The compact design means it can be carried in a pocket or clipped to clothing.
- Installer convenience— For installers deploying Ajax systems, the easy pairing and long battery life reduce on‑site maintenance and callbacks. The clear LED confirmations and anti‑spoofing protections also simplify debugging and customer handover.
- Multi‑user households— A small household can issue a keyfob to each adult for quick system access without sharing phone credentials or relying on smartphone proximity.
How the SpaceControl S compares with similar products
In the market for alarm keyfobs there are several competing approaches: basic one‑way transmitters, smartphone app controls, and professional two‑way radio keyfobs. Compared to one‑way transmitters, the Ajax SpaceControl S’s two‑way Jeweller radio has a distinct advantage: it provides delivery confirmation, improved resilience to replay or spoof attacks, and richer integration with the hub for system status-aware features like partial arming.
Against smartphone‑centric systems, a dedicated keyfob has the obvious advantages of simplicity and speed — no app to open, no reliance on a charged smartphone, and clear tactile controls. For users who prefer a physical, always‑available control, the SpaceControl S is a better fit than app‑only solutions.
Compared to other commercial‑grade keyfobs, SpaceControl S’s strengths are its certified Grade 2 security level, configurable accidental‑press protection, and the proven Jeweller radio platform used across Ajax products. Some competitor keyfobs offer additional features such as OLED displays or biometric locks, but those add cost and complexity. SpaceControl S focuses on reliability, long battery life and clean ergonomics.
Where range is a deciding factor, some long‑range proprietary systems may claim similar distances; however, performance in buildings will always vary. The practical difference is often in hub placement and environment rather than nominal range numbers. If maximum indoor range is critical, a site survey or signal repeater options should be discussed with installers.
Customer feedback and typical reviews
While individual reviews will vary, common themes from customers who choose Ajax keyfobs like the SpaceControl S include praise for the compact size, ease of use and the reassuring LED feedback. Users often highlight the practical benefits of accidental‑press protection — the configurable double‑press or long‑press behavior helps reduce false alarms especially when the keyfob is carried in a bag or pocket.
Installers and power users frequently note the long battery life as a top selling point, since multi‑year CR2032 operation reduces maintenance costs. Typical positive comments reference fast pairing with Ajax hubs and the confidence that comes from an EN 50131 Grade 2 listing for a commercial‑grade accessory.
Some users advise checking the specific IP and temperature ratings for the regional model before relying on the device in extreme outdoor conditions — that is sound advice given variability across markets and listings. Overall, the sentiment from both end users and professionals tends to be that SpaceControl S delivers dependable, straightforward control for Ajax systems without unnecessary extras.
Conclusion: why choose the Ajax SpaceControl S?
The Ajax SpaceControl S 4‑Button Keyfob balances simplicity, security and practicality. Its clear set of features — four programmable buttons including a panic function, two‑way encrypted Jeweller radio, configurable accidental‑press protection and long battery life — make it a strong choice for homes, flats and small businesses that use Ajax alarm hubs. Certified to EN 50131 Grade 2 and designed for easy pairing and daily use, it provides a professional, low‑maintenance control option that complements app‑based and sensor‑driven controls.
If you want a physical remote that reliably controls an Ajax system, minimizes false alarms, and demands minimal upkeep, the SpaceControl S is worth considering. As with any security purchase, confirm the regional technical details and certifications in the official Ajax documentation and, if needed, consult a trusted installer to ensure best placement and integration within your alarm setup.
