Digital Display: LED [Red/Blue/Green] or LCD Power supply: AC9V/110V/220V DC5V/12V/24V Installation method: Inlay Operating temperature: 0~60(Celsius) [Industrial: -25~60, Military:-40~80] Relative humidity: 20%~80% Key features: *Excellence supplier to Panasonic Co. more than 13 years. *70% Component parts come from world-well known Manufacturers. *Passed CE Certificate since 2001; *Passed ISO9001 Certificate since 2001; *Complied with RoHS standard; *5 years history in Panel meter(Our factory was founded in 1994) *Superior quality at attractive price OTHER: Chips: Microchip, Siemens, Panasonic. Terminal: Phoenix, Thomson. Potentiometers: Bourns, Tocos. Testing equipment: FLUKE, KEITHLEY, HP, HIOKI. Production equipment: YAMAHA. Production capability is 3000-4000pcs/day