These keypads include an economical model with GRI's KBM series mechanical switches, a mounting frame and ABS plastic keycaps. Keyswitch life expectancy is rated at 10 million operations. This version is also available with GRI's KBR series reed switches for higher reliability. The KBR switch has a rated life expectancy of 30 million operations. Because it uses a hermetically sealed reed switch, it is impervious to dust, dirt and moisture.
Illumination can be by either incandescent bulbs or LED's.
The rated life expectancy is 50 million operations. The KB switch versions use GRI's unique Alignment Blocks instead of a mounting frame. These versatile keypads can also be specified to incorporate components to meet MIL-spec 883B requirements.