Standard Keypads Features • Waterproof Silicone Rubber • Easily Customized Legends • Audible, Tactile Contacts • Low Contact Resistance • Optional RFI/EMI Shielding • 3,000,000 Operations per Button Dimensions in inches (and millimeters) 1 Button Module #4-40 MTG. STUD, 2 PLACES (ALSO SERVES AS .313 TERMINALS) (7,95) SINGLE THROW, NORMALLY OPEN .362 ± .015 (9,19 ± 0,38) Note: Mounting studs serve as terminals. Unless otherwise noted, linear dimension tolerances are ± .010 (0,25) 3x4 Keyboard Matrix Output .750 (19,05) 3 EQ. SPS. TOL. NON-ACCUM. SWITCH POSITION IDENTIFICATION .425 (10,80) .750 (19,05) 2 EQ. SPS. TOL. NON-ACCUM. .366 (9,30) SQ. BUTTON AREA Grayhill, Inc. • 561 Hillgrove Avenue • LaGrange, Illinois

Standard Keypads DIMENSIONS in inches (and millimeters) CODE And TRuTH Tables Dots in the chart indicate connected terminals when switch is closed. Terminals are identified on the keyboard. 12 Button Keypads 16 Button Keypads specifications rating Criteria rating at 24 Vdc: <10 milliamps resistive Contact Bounce: 4 milliseconds maximum at make; 10 milliseconds at break Contact resistance: MOS, TTL, and DTL compatible. (10 ohms maximum) Life Expectancy: 3 million operations/button Insulation resistance: 1,000 megohms operating Features Pre-Travel: .030 inches minimum operating Temperature: -55°C...

Standard Keypads receiving equipment. A signal generator provided the frequency source that was radiated from the transmitting antenna to the enclosed receiving antenna. The spacing between antennas was maintained constant throughout the frequency range. The effectiveness rating is determined by establishing a reference reading without obstruction between the two antennas and determining the difference between that reading and the test setup reading. Standard Legends Available through Grayhill Distributors To order one of the configurations below, use the dash number shown here; select the keypad...