APS-612 is an advanced backup power supply that meets the high security requirements of the EN 50131-3 standard for Grade 3. Its output current is 6 A: 3 A for powering devices and 3 A for charging the battery. It is designed to power loads operating at 12 V DC, including devices used in alarm systems, access control systems, and CCTV systems. APS-612 can also be used to power laboratory devices, such as those in medical laboratories, for industrial automation applications, and for critical infrastructure systems. It features a special 3-pin connector for use with SATEL devices, including zone/output expanders or ACCO-NT access control panels.

The LLC topology SMPS used in its construction is characterized by high efficiency and provides excellent performance with low heat losses. Because of the direct supply from 230 V AC mains, the device does not require the installation of any additional mains transformer. APS-612 is equipped with short circuit and overload protection. It has a noise filter and an active circuit of power factor correction (PFC) at the input, achieving a factor of 0.98.

A battery can be connected directly to the power supply. Microprocessor control of battery status and performance, precise voltage regulation, and automatic disconnection in case of excessive discharge keep the battery in good condition and reduce the possibility of damage, thus prolonging its service life.

LEDs indicate the availability of mains supply, battery supply status, and occurrence of troubles such as overheating, overload, or output short-circuit. Troubles are also signaled acoustically. The alarm system is informed of any troubles by four OC type outputs. Changes in their status indicate excessive operating temperature, battery voltage drop below the permissible value, output overload, or mains power loss.