Ajax KIT2 S Hub 2 Plus Wireless Intruder Alarm Kit, 2x MotionProtect S, DoorProtect S, HomeSiren & StreetSiren, 2x SpaceControl (90764.243.BL1)

Introduction to the Ajax KIT2 S Hub 2 Plus Wireless Intruder Alarm Kit

Ajax KIT2 S (90764.243.BL1)is a complete wireless intruder alarm kit designed to protect small homes and small commercial premises with a modern, resilient approach to security. Built around the Hub 2 Plus control panel, this kit combines multi-path communications (Ethernet, Wi‑Fi and dual micro‑SIM cellular), encrypted two‑way radio (Jeweller) and support for Ajax’s broader device ecosystem. The bundle includes indoor and outdoor audible deterrents plus remote control keyfobs and motion and door sensors to provide a ready-to-deploy security solution.

Key features at a glance

• Multi-path connectivity:Ethernet, Wi‑Fi and dual‑SIM cellular with automatic failover to keep notifications and monitoring active even if one path fails.
• Comprehensive device set:2 × MotionProtect S, 1 × DoorProtect S, HomeSiren S (indoor) and StreetSiren (outdoor), plus 2 SpaceControl keyfobs.
• Encrypted radio links:Jeweller two‑way radio for reliable, low‑latency signalling; Wings support for photo verification if paired with MotionCam detectors.
• Scalability:Hub 2 Plus supports up to 200 devices, 200 users and 50 rooms — ample capacity for small to mid-size installations.
• Immediate deterrence and remote alerts:Local sirens and cloud/app notifications ensure both neighbours and monitoring services can respond.

Detailed specifications and benefits

• Dimensions:163 × 163 × 36 mm
• Weight:351 g
• Power input:110–240 V AC
• Backup battery:Built‑in Li‑ion, ~15 h typical
• Device capacity:Up to 200 devices, 200 users, 50 rooms
• Radio (Jeweller):Up to 2,000 m (open space) — long-range connectivity to wireless sensors
• Radio (Wings):Up to 1,700 m (open space) — used for photo verification devices
• Ethernet:100 Mbps
• Wi‑Fi:802.11 b/g/n
• Cellular:Dual micro‑SIM (2G/3G/4G LTE bands) for resilient mobile connectivity

• Hub:Hub 2 Plus with SmartBracket, power and ethernet cables, and internal battery
• Motion detectors:2 × MotionProtect S (PIR motion detectors) — reliable motion sensing for indoor areas
• Door detector:1 × DoorProtect S (opening/contact) — discreet protection for entry points
• Keyfobs:2 × SpaceControl 4‑button remote keyfobs for arming, disarming and panic alerts
• Indoor siren:HomeSiren S — loud local alarm to warn occupants and neighbours
• Outdoor siren:StreetSiren — weatherproof exterior deterrent to draw attention and deter intruders

• Notifications:Push, SMS and calls via Ajax Cloud and mobile apps for instant awareness
• Monitoring protocols:SIA (DC‑09), Contact ID, ADEMCO 685 for professional alarm receiving centres
• Photo verification:Hub 2 Plus supports photo verification, but this requires MotionCam or MotionCam Outdoor detectors — the MotionProtect S units included in this kit do not include cameras

• Resilience:Automatic failover across Ethernet, Wi‑Fi and two cellular connections reduces single points of failure and ensures alerts reach their destination.
• Scalability:Support for up to 200 devices and 200 users lets the system grow with changing needs — add sensors, cameras or automation devices over time.
• Strong deterrence:The combination of indoor and outdoor sirens provides audible deterrence both inside and outside the property.
• Encrypted communications:Jeweller two‑way radio provides secure, low-latency signalling between devices and the hub to reduce false alarms and tampering risks.
• Ease of use:SpaceControl keyfobs and the Ajax mobile apps make arming, disarming and managing the system straightforward for non-technical users.

Use cases and scenarios where the Ajax KIT2 S excels

The Ajax KIT2 S is tailored to environments that need dependable security without complicated wiring or costly installation. Typical scenarios include:

• Small family homes:Quick DIY installation, reliable notifications for homeowners, and strong local deterrence with both indoor and outdoor sirens.
• Small commercial premises:Retail stores, boutiques, small offices and warehouses that require professional monitoring compatibility and a resilient communications setup to reduce downtime.
• Remote or intermittent-connectivity locations:Sites where broadband is unreliable benefit from dual‑SIM cellular backup and Wi‑Fi/Ethernet failover.
• Landlords and multi-occupancy properties:Centralised control with multiple users and rooms, and the ability to expand the system as tenants change or coverage needs evolve.
• Temporary or rapid-deployment needs:Tradespeople, pop-up shops or event spaces that need fast, temporary security with professional-grade alarm signalling.

How Ajax KIT2 S compares with similar products on the market

When comparing the Ajax KIT2 S to other contemporary alarm kits, several strengths and trade-offs become clear. Many mainstream DIY alarm systems focus on ease of use and basic app notifications, while higher-end professional systems rely on hardwired connections and professional installers. Ajax sits in a hybrid space offering professional-grade features with an accessible setup.

• Multi-path failover:Unlike some kits that depend on Wi‑Fi alone, the Hub 2 Plus includes Ethernet and dual micro‑SIM cellular options, which increases reliability for monitored installations.
• Radio range and capacity:Jeweller radio ranges (up to 2,000 m open space) and a 200-device capacity exceed many consumer-grade kits, allowing more sensors and larger coverage areas.
• Professional monitoring support:Native support for SIA, Contact ID and ADEMCO 685 makes integration with alarm receiving centres straightforward.
• Outdoor siren included:Many kits either ship with indoor sirens only or require separate purchases for outdoor deterrence; StreetSiren in this package improves value for premises needing external coverage.

• No photo verification in included sensors:Photo verification is a valuable feature available on Ajax when using MotionCam detectors; the MotionProtect S units in this kit do not include cameras, so photo verification would require additional sensors.
• Installation:While the kit is suitable for DIY setups, commercial or monitored installations may benefit from professional installation to ensure coverage and compliance with monitoring standards.

Conclusion: Why the Ajax KIT2 S is a strong choice

The Ajax KIT2 S Hub 2 Plus kit is a compelling hybrid of professional-grade features and user-friendly design. Its multi-path communications (Ethernet, Wi‑Fi and dual‑SIM cellular), robust radio range, large device capacity and inclusion of both indoor and outdoor sirens make it particularly well suited to small homes, small businesses and locations where reliable, remotely monitored security is essential.

If photo verification is an important requirement, consider adding MotionCam detectors to the system. For monitored commercial environments, professional installation and configuration will ensure the system meets local monitoring and safety standards.

Overall, Ajax KIT2 S is a versatile kit that provides a strong security foundation with clear upgrade paths, making it a practical choice for anyone looking to invest in a reliable wireless intruder alarm system.