Beckwith Electronics

Hamburg, Illinois 62045
(618) 232-1139

(618) 232-1172 fax

Contact Us

EAO SECME Division


Discontinued for reference only

ETFL/TFL  Illuminated and non-illuminated sealed keypads

ETFL and TFL keypads employ a continuous silk screened polycarbonate front membrane for operation in hostile environments. Telephone-type 12-key and 16-key hexidecimal II layouts are offered. ETFL models feature flush mounting. Keypads are used for machine tool, process control, and other heavy duty industrial equipment applications.

  1. Keypads are sealed to IP 65 for industrial use
  2. Silk screened polycarbonate front membrane
  3. Metalic dome contacts for 1 watt power rating
  4. Telephone and hexidecimal II layouts
  5. Twelve and 16-key illuminated and non-illuminated
  6. More than 100,000 operations



ETFL/TFL Keypads
Description12-key
Telephone
16-key
Hexidecimal II
ETFL, non-illuminatedETFL 12155 00ETFL 16255 00
ETFL, illuminatedETFL 12155 04ETFL 16255 04
TFL, non-illuminatedTFL 12150 00TFL 16250 00
TFL, illuminatedTFL 12150 44TFL 16250 44

Specifications
Contacts:
Gold/gold
 
 
24 V/50 mA nominal
50V max.
10mV/1 mA min.
1 W nominal power
Contact circuit resistance<200 M Ohms, 50 mV/10 mA
Insulation resistance>1,000 M Ohms, 100 VDC
Operating force4.0 N (ETFL), 6.0 N. (TFL)+35%
Travel07 mm +0.3 mm
Operating life>100,000 operations
Vibration resistance2000/10 Hz, 10 cycles, 10 G
Mechanical shock resistance
 
100G (NFC 20708)
40G/100 (NFC 20724)
E.D.S. protection5000 V
Operating temperature-25 to +85°C
Storage temperature-40 to +85°C
Front seal (when mounted)IP 65
Damp heat21 days (NFC 20703)
Dry heat @ 85°C21 days
Saline mist48 hours (NFC 20711)

12-key ETFL keypad
(16-key also available)


Connector output
(back view)
12-key

16-key TFL keypad
(12-key also available)



Key location for electrical wiring