
PCI Encrypting Pin Pad
KY3688C Metal PCI EPP With PCI 3.0 Certification
KY3688C is a metal PCI encrypting pin pad certified to PCI 3.0, built for attended and unattended payment points. It uses a physical keypad of #304 stainless steel with a defined layout that includes braille, connects over an…
Product Overview
KY3688C is a metal PCI encrypting pin pad certified to PCI 3.0, built for attended and unattended payment points. It uses a physical keypad of #304 stainless steel with a defined layout that includes braille, connects over an RS232 Serial Port and manages 16 keys under MK/SK key management with remote key loading. The device measures 87.5*91.5 mm.
- PCI 3.0 certification alongside CE, ROHS, FCC, IP65 and IK7
- Rated for a temperature range of -40°C ~ 105°C, covering unheated outdoor enclosures
- MTBF greater than 42950 with a key press life of 2 millions
- Remote key loading so devices do not need a site visit to be keyed
- Defined layout including braille for accessible PIN entry
- Current below 40mA, the lowest draw in this group

Application Scenarios
- Attended payment counters using a PED class device
- Unattended payment points on forecourts and in transport
- ATM PIN entry requiring PCI certification
- Outdoor installations exposed to wide temperature swings
Who It Is For
- ATM and payment terminal manufacturers requiring PCI 3.0
- Acquirer-driven projects with remote key loading requirements
- Unattended payment kiosk builders
- Integrators needing a braille-equipped keypad
Problems It Solves
- PCI 3.0 certification required before a terminal can be deployed
- Key injection visits to remote machines, addressed by remote key loading
- Accessibility rules requiring braille on the PIN keypad
- Keypads outside their temperature rating in unheated enclosures
- Impact exposure at unattended sites, covered by the IK7 rating
Technical Features
- PIN Entry Technology of physical keypad, Class PED
- Interface of RS232 Serial Port with MK/SK key management
- Algorithms 3DES, AES, SHA256 and RSA to ISO9564-1 0 / 1 / 3 / 4, ANSI X9.8, ANSI X9.19, ECB and CBC
- Key Number 16 covering Master Key, PIN Key, Mac Key and Data Key
- Operating Voltage 5.0V ±10% with a Battery Voltage of 3.0V ±10%
- Material #304 with a defined layout including braille
- Relative Humidity 5% ~ 95% non-condensing
Specifications
| Size | 87.5*91.5 mm |
|---|---|
| Class | PED |
| Interface | RS232 Serial Port |
| Key Management | MK/SK |
| PIN Entry Evaluated | Online |
| Temperature range | -40°C ~ 105°C |
| Relative Humidity | 5% ~ 95% (Non-condensing) |
| Operating Voltage | 5.0V ±10% |
| Battery Voltage | 3.0V ±10% |
| MTBF | > 42950 |
| Key Press Life | 2 millions |
| Current | <40mA |
Materials
- #304 stainless steel keypad material
Manufacturing Process
- Sheet-metal forming of the 87.5*91.5 mm #304 panel
- CNC machining of the 16 key positions
- Laser etching of key legends and braille marks
- Secure module assembly with tamper protection
- Remote key loading setup and functional verification
Quality Control
- PCI 3.0 conformance verification of the assembled device
- Key press sampling against the 2 millions key press life
- ESD testing to the stated 6K and 8K figures
- Temperature testing across -40°C ~ 105°C
- RS232 communication and key loading test
Approvals And Test Documentation
- PCI 3.0
- CE
- ROHS
- FCC
- IP65
- IK7
Customisation Options
- Defined key layout including braille
- Key legend etching to your specification
- Bezel and fixing arrangement for attended or unattended mounting
- RS232 harness length and connector
- Remote key loading configuration with your key management host
How It Compares
| KY3688A metal EPP | KY3688C is certified to PCI 3.0 in a 87.5*91.5 mm size, where KY3688A is PCI 1.3 at 145*100 mm. |
|---|---|
| KY3088X encrypting pin pad | KY3688C adds PCI 3.0 certification, IK7 impact rating and a -40°C ~ 105°C temperature range. |
| Non-certified pin pads | Key management is MK/SK with remote key loading and 16 keys, which a plain keypad does not provide. |
Use Guide
- Confirm your acquirer accepts PCI 3.0 for the deployment window
- Size the opening to the 87.5*91.5 mm device
- Provide an RS232 Serial Port on the host controller
- Supply 5.0V ±10% and keep the 3.0V ±10% battery in service
- Plan remote key loading with your key management host before rollout
Solutions
Related Reading
Questions About This Model
Which PCI level is certified?
PCI 3.0, together with CE, ROHS, FCC, IP65 and IK7.
What algorithms does it support?
3DES, AES, SHA256 and RSA, to ISO9564-1 0 / 1 / 3 / 4, ANSI X9.8, ANSI X9.19, ECB and CBC.
How are keys loaded?
Key Loading is remote, under MK/SK key management with 16 keys including Master Key, PIN Key, Mac Key and Data Key.
What temperature range is it rated for?
-40°C ~ 105°C with relative humidity of 5% ~ 95% non-condensing.
Is the keypad accessible?
The layout is defined and includes braille, with a physical keypad PIN entry technology.
Can it be used in unattended machines?
The POI is intended for use in both attended and unattended installations.
Request A Quote On KY3688C
Tell us quantity, interface and mounting method. Drawings and panel cutouts are welcome by WhatsApp or email.