Uninterruptible power supply for Ajax Hub: how to choose a reliable backup power supply

Ajax Hub is an intelligent central (mind, you could say) security system from Ajax.

This company combines all sensors and devices into a single network. Its main function is to receive signals from motion, opening, fire or flood sensors and instantly transmit the alarm to the owner on a smartphone or to the security company's remote control. The hub constantly analyzes the system status, polls devices and instantly responds to any attempts at hacking, signal jamming or power outage.

A feature of this device is the use of proprietary communication protocols Jeweller and Wings, which provide high data transfer speed, protection against substitution and an impressive operating range of up to 2000 meters in open space. Thanks to the built-in battery and several communication channels (Ethernet, Wi-Fi, 2G/4G), Ajax Hub guarantees stable protection of the object even in case of blackouts or lack of Internet, making autonomous and highly reliable security system.

Ajax Hub only works stably when it has continuous feeding. If in house will disappear 220V, the control panel will continue to protect the facility only if there is a properly selected backup source. The mistake here is one of the most expensive: taking "any" battery and hoping that the security system will last for several hours or even a day.

For Ajax, it is important not only to supply voltage during a power outage, but also to ensure it is in the required range, without dips and overcharging. Therefore, the uninterruptible power supply for Ajax Hub should be selected as a technical unit, and not as a regular box with a battery.

How is Ajax Hub powered and why a regular block is not suitable

Most Ajax hubs operate from an external DC power source. When the network 220V disappears, the system should immediately switch to battery. If the switch occurs with a pause, the hub may reboot and the communication channels may lose synchronization.

A common mistake is to power Ajax Hub from cheap PC UPSs. For protection, it is not the peak power that is important, but the quality of the output voltage and stability in a long-term reserve. Also consider the temperature regime: at +25…+30 °C, battery degradation accelerates.

FAQ: Engineer Gennady Pratsevich answers

Question: Can I connect a router to the same BVP as the hub?
Gennady Pratsevich: “It is possible, but only if you take into account the total consumption. Often people forget that the router consumes a significant part of the energy, and because of this the hub discharges faster than planned. It is better to calculate the capacity with a 50% margin.”

Question: What happens if the battery voltage drops below normal?
Gennady Pratsevich: “If the UPS does not have deep discharge protection, you will simply ruin the battery in one such blackout. Therefore, always choose devices with an integrated protection controller.”

Comparison of solutions

How to calculate autonomy without errors

The calculation starts from the actual consumption of the entire line. A practical rule of thumb is to take a reserve capacity of at least 30–50%. If you need 6–8 hours of autonomy, the battery is selected taking into account the fact that you should not regularly discharge it «to zero».

• Importantly: Don't just count the main hub. Add a router, 4G modems, and other peripherals.
• Advice: Lead batteries They are afraid of deep discharge - this is the main enemy of their resource.

An uninterruptible power supply for Ajax Hub should be selected based on three criteria: compatible voltage, sufficient charging current and real battery capacity with a reserve. For the home, a ready-made UPS for alarm with protection against deep discharge works most reliably. If you are looking for reliable equipment, refer to the proven range Electro Shop — we will choose a solution that will withstand any outages.