V s instruments manufactures a series of electronic hooters in 96 mm x 96 mm x 110/80 mm enclosures. These electronic hooters are power and efficient having high audio output with variable tone adjustable at site. They are made of engineering plastic or metal body, making them suitable for panel mounting and handling. The electronic hooters are compact and aesthetically designed to suit any user. They are rugged and give trouble free performance. Technical specifications include: power supply of 230 v ac, 50 hz; universal 24 to 240 v ac/dc; front panel mounting; cutout size of 92 mm x 92 mm; bezel 96 mm x 96 mm; depth 110 mm or 80 mm; audio output 90 to 125 db; and tone adjustable/any custom tones, also available in polyphonic musical tones.