Stainless steel keypads and keyboards
Stainless steel keypads and keyboards are particularly resistant to harsh environments: extreme climatic conditions, vandalism, stains... They consist of customised stainless steel single keys mounted on a PCB and encased in a front panel. APEM designs and manufactures three series meeting EMC international standards and featuring good tactile feedback and IP65 front face sealing.
The technologies
70 Series
 |
8P Series
 |
9 Series
 |
Mechanical specifications
| Contact force:
1.5 N +/- 20 % Contact travel: 1.3 mm Operations: 1 000 000 Sealing: IP 65 Track ball: IP 65 static |
Contact force:
4 N +/- 0.5 N Contact travel: 0.5 mm Operations: 1 000 000 Sealing: IP 65 Track ball: IP 65 static |
Contact force:
2.5 to 4 N +/- 0.5 N Contact travel: 0.5 mm Operations: 3 000 000 Sealing: IP 65 Track ball: IP 65 static |
Electrical specifications
| Maximum voltage: 12 VDC
Maximum current: 10 mA Contact resistance: 8 to 20 ohms Dielectric strength: 250 V Insulation resistance: > 100 M ohms |
Maximum voltage: 24 VDC
Maximum current: 50 mA Contact resistance: < 10 ohms Dielectric strength: 250 V Insulation resistance: > 100 M ohms |
Maximum voltage: 24 VDC
Maximum current: 50 mA Contact resistance: < 10 ohms Dielectric strength: 250 V Insulation resistance: > 100 M ohms |
Climatic specifications
Operating temperature : -20°C à +70°C
With standard interface : 0°C à + 70°C
With specific interface : -20°C to +70°C
Storage temperature : -40°C to +85°C
Numerous configurations
The design modularity of this product line and its capability to meet stringent requirements have resulted in the recognition of APEM as a leading manufacturer of high quality fully customised stainless steel keypads and keyboards.
Key shapes
- 70 series
Oblong
- 8 series - 9 series
Round, square, rectangular
Key marking
- 70 series
Laser marking
- 8 series - 9 series
Chemical etching (colours available)
Backlighting
8 series - 9 series
By LED (white, red, green, yellow, blue)
Supply voltage: + 5, + 12, + 24 VDC
Max. current for a backlit key:
8 series: 10 to 40 mA
9 series: 10 to 20 mA
depending on LED colour, number of LED’s and supply voltage.
Modularity
8 series - 9 series
From standard keys, APEM can develop specific keypads and keyboards without expensive tooling costs for the customer.
As an option, series 9 can be built without front frame, in order to be assembled on existing panels.