MKA-4FN High Keys Stainless Steel Function Keypad

Number of keys 4 Key Switch Carbon switch technology Switching cycles more than 5 million actuation Material FRONT PANEL: 304 stainless steel  BACK PANEL: aluminum Power Supply 5v DC /-5% Interface Matrix, USB/PS2 optional EMC Standard EN 55032:2015 , EN 55035:2017 Temperature Range Operating: -20°C to 55°C, Storage: -30°C to 60°C Compatibility All Windows, Linux, Mac Warranty 1 year Certification CE/FCC/ RoHS/IP65/IK08 Dimensions 150.0 x 35.0 mm (Front panel) Weight 0.5kg