The Voltcraft 340 Digital Counter Module is a 6-digit forwards/backwards counter with DIN dimensions for installation in power supplies, lab equipment and control panels. Standard module with DIN dimensions 48 x 24mm, 14mm digit height and backlight. This well designed module has a number of key features, including a forward/backward counter with 6-digit display, alarm output for an optional buzzer or LED when a pre-selected value is reached, forwards/backwards counting allowing the device to perform as a countdown timer and counting input via button against earth or logic level (active low). * Assembly dimensions 72 x 36 x 15mm * Switchable counting frequency 2Hz/250Hz * Outputs for counter status ‘0' and alarm activated * Operating voltage 3V/DC * Pre-selected value is set using four optional buttons Please note: Module supplied with buzzer attached.