Features of Ajax Relay — Wi-Fi Relay for Door Opening and Alarm Automation
Smart and Secure Remote Control
The Ajax Relay is a wireless dry-contact relay designed for remote door opening and alarm system automation. Thanks to its secure communication via the Jeweller protocol at 868 MHz, it guarantees a reliable, interference-resistant connection with a range of up to 1,000 meters in open space. Control all your electrical devices securely from the Ajax app, with encrypted commands and tamper protection.
Power and Voltage Versatility
Compatible with multiple types of electrical circuits, the Ajax Relay operates on a 7–24 V DC power supply and allows for the switching of devices with a maximum power of up to 3 kW. It supports currents of up to 5 A at 36 V DC or 13 A at 230 V AC, making it ideal for both low-voltage applications and residential or commercial AC systems. Its dry contacts are galvanically isolated, allowing for the control of independent circuits without the risk of interference.
Advanced Operating Modes
Choose between bistable mode (contacts that open and close like a traditional switch) or pulse mode (pulses ranging from 0.5 to 255 seconds that close or open automatically). This flexibility allows you to adapt the relay to different types of devices and applications, from automatic doors to smart blinds. Configure all modes directly from the Ajax app without the need for additional technical intervention.
Built-in Protection Against Malfunctions
Your safety is a priority. The Ajax Relay includes built-in protection against overheating (it automatically shuts down if the external temperature exceeds 65°C or the internal temperature exceeds 85°C) and surge protection with thresholds configurable between 6.5V and 36.5V. If it detects anomalies in the power supply or temperature, the device automatically shuts down and sends an alert. These protections operate continuously to ensure the longevity of your equipment.
Automation and Smart Scenarios
Create advanced automation scenarios that respond to your alarm system being armed or disarmed, motion detection, button presses, or scheduled events. The Ajax Relay integrates seamlessly with the entire Ajax ecosystem, allowing you to synchronize door opening with security events, schedule automatic locking at specific times, or activate multiple devices simultaneously. Full control from a single centralized point.
Versatile Applications for Home and Office
The Ajax Relay is perfect for automatically opening doors and gates, controlling electric locks, automating blinds and curtains, managing HVAC systems, turning smart lighting on and off, and even remotely resetting modems and routers. In commercial and industrial settings, it’s ideal for professional home automation projects that require extreme reliability and built-in security.
Compact Design and Professional Installation
Measuring just 39 × 33 × 18 mm, the Ajax Relay installs easily in standard junction boxes, electrical distribution panels, or automation cabinets. Its minimalist design requires no additional space. Installation must be performed by a qualified electrician who correctly connects the power terminals and output contacts according to the desired circuit. Compatible only with Ajax hubs (incompatible with ocBridge Plus or uartBridge).
Two-Way Communication and Real-Time Monitoring
The Ajax Relay’s bidirectional Jeweller technology not only sends commands but also receives real-time execution confirmation. The Ajax app allows you to monitor the power supply voltage of the relay and connected devices, receive instant notifications of any event or anomaly, and access a complete history of activations. Total control with full visibility into what’s happening in your system.
Commercial and Residential Security
Ideal for both residential security systems and commercial and industrial facilities, the Ajax Relay integrates with cameras, motion detectors, door sensors, and other Ajax devices to create a unified automation and alarm ecosystem. Anti-tamper protections, data encryption, and authentication ensure that only authorized users can control your systems, with every command logged in the cloud for auditing.
Technical Specifications
Communication Protocol: Jeweller 868 MHz (bidirectional, dynamic encryption, range up to 1,000 m in open space) | Power Supply: 7–24 V DC (12 V and 24 V recommended) | Maximum Power: 3 kW | Maximum Current: 5 A at 36 V DC, 13 A at 230 V AC | Contact Type: Dry (potential-free, galvanically isolated) | Modes: Bistable and Pulse (0.5–255 seconds) | Protections: Overheating, overvoltage, tamper | Dimensions: 39 × 33 × 18 mm | Compatibility: Ajax Hubs only
