Voltamp Controls offers a servo controlled voltage stabilizer marketed under the brand name EverAlert. This has many applications mainly in computers, medical equipments, laboratories and process control equipments, etc. Features: fully solid-state control circuit, using high stability industrial grade silicon semi-conductors; efficiency better than 98% at full load; NIL wave form distortion; mode of correction by DC geared motor, eliminates failures in the field; no effect of load power factor; inter-changeable control card and module; unaffected by change in supply frequency between 47 to 53 Hz; high short time overload capacity; no phase shift; low internal impedance; high speed of correction up to 35 V per second; under-voltage and over-voltage cut-off when input and output goes beyond set limits; S/C or O/L protection by fuse and circuit breaker; dual-coloured LED to indicate l/p high (red) l/p low (green); and, built-in surge protection network. Available in single-phase and three-phase models.