Apartment, Multifamily & Rental Property Access Control
Apartment building access control hardware: anti-clone readers with matched fob sets, QR visitor codes, 4G controllers for rentals and UHF tags for gates.
ValenID · valenid.com · sales@valenid.com
SK-120 IP65 Metal Standalone Access Control Keypad
IP65 metal keypad with physical keys that stores 5,000 users and drives the lock relay itself. 125 kHz EM, 13.56 MHz MIFARE and encrypted CPU-card versions.
- IP65 metal housing with raised physical keys for exterior doors and gates
- 5,000 users with card, PIN or card + PIN access
- 125 kHz EM, 13.56 MHz MIFARE/NTAG UID or encrypted CPU-card versions
- Switches to reader mode to feed an existing Wiegand access panel
- Wiegand D0/D1 or TXD/RXD serial on DIP-selectable leads
- Frequency
- 125 kHz or 13.56 MHz (by variant)
- User capacity
- 5,000 users
- IP rating
- IP65
- Outputs
- Lock relay (NO/COM/NC) + Wiegand
- Power
- 12 V DC ±5%, ≤ 200 mA
- Dimensions
- 120 × 80 × 22.67 mm
Reply within 24 hours Tested before dispatch Worldwide shipping
IP65 Metal Standalone Access Control Keypad: overview
The SK-120 is a standalone access control keypad for single doors and pedestrian gates exposed to the weather. Its IP65 metal housing carries raised physical keys, it holds 5,000 users, and it decides locally whether to release the lock through its onboard relay. Access can be granted by card, PIN or card plus PIN.
Three credential options are listed. The SK-120-E reads 125 kHz EM4100, EM4102 and EM4200-compatible cards and fobs. The SK-120-M reads UIDs from 13.56 MHz MIFARE Classic, MIFARE Plus, MIFARE DESFire, MIFARE Ultralight and NTAG2xx, and its card-number output format and accepted card type can be configured in software. The SK-120-MS adds encrypted CPU-card support for projects moving beyond UID-only credentials.
The keypad can be switched from standalone operation to reader mode, where it acts as a Wiegand reader for an existing access panel. In standalone mode it keeps its own alarm logic for door-sensor events, tampering and repeated wrong entries. Users can be added, deleted one by one or cleared in bulk, copied to a second unit, or managed from a PC. The electronics tolerate 6 kV contact and 8 kV air electrostatic discharge.
Integration notes
Thirteen color-coded leads cover 12 V DC, relay NO/COM/NC, door sensor, exit button, alarm, doorbell and AUX+. DIP switches 5 and 6 select Wiegand D0/D1 or TXD/RXD serial on the green and white leads. Allow up to 200 mA for the keypad on top of the lock load. Enrollment steps are in our keypad programming guide.
More features
- ESD tolerance of 6 kV contact and 8 kV air
SK-120 specifications
RF & credentials
| Frequency | 125 kHz (SK-120-E) or 13.56 MHz (SK-120-M, SK-120-MS) |
|---|---|
| 125 kHz credentials | EM4100, EM4102 and EM4200-compatible cards and key fobs (thick, thin and fob formats) |
| 13.56 MHz credentials | MIFARE Classic Mini/EV1, MIFARE Plus S/X, MIFARE DESFire EV1/EV2/EV3/Light, MIFARE Ultralight/Ultralight C/Ultralight EV1, NTAG2xx (UID read) |
| Output format | SK-120-M: card-number output format and card type configurable in software |
| Encrypted cards | SK-120-MS: encrypted CPU card support |
| Read range | 0–3 cm (depends on credential and installation) |
Access control
| User capacity | 5,000 users |
|---|---|
| Access modes | Card, PIN, card + PIN |
| Operating modes | Standalone controller or Wiegand reader (switchable) |
| User management | Add, delete single user, delete all; management cards; user copy; PC user management |
| Alarms | Door sensor, tamper, repeated wrong entry |
Interfaces & wiring
| Lock output | Relay, NO / COM / NC contacts |
|---|---|
| Data output | Wiegand D0/D1 or TXD/RXD serial, selected by DIP switches 5 and 6 |
| Inputs | Door sensor (SEN), exit button (BUT) |
| Other leads | Alarm linkage (AL), auxiliary (AUX+), doorbell (BELL+ / BELL–) |
| Harness | 13 color-coded leads |
Electrical
| Supply voltage | 12 V DC ±5% |
|---|---|
| Operating current | ≤ 200 mA |
| Standby current | ≤ 150 mA |
| ESD | 6 kV contact, 8 kV air |
Mechanical & environment
| Housing | Metal, physical keys |
|---|---|
| Protection | IP65 |
| Dimensions | 120 × 80 × 22.67 mm (±0.3 mm) |
| Operating temperature | –20 to +60 °C |
| Storage temperature | –20 to +80 °C |
| Humidity | 15–90% RH |
Variant matrix
| Variant | Frequency | Credentials | Notes |
|---|---|---|---|
| SK-120-E | 125 kHz | EM4100 / EM4102 / EM4200 cards and fobs | — |
| SK-120-M | 13.56 MHz | MIFARE Classic, Plus, DESFire, Ultralight, NTAG2xx (UID) | Output format and card type set in software |
| SK-120-MS | 13.56 MHz | Same as SK-120-M plus encrypted CPU cards | For encrypted-credential projects |
Wiring (13 color-coded leads)
| Wire color | Label | Function |
|---|---|---|
| Red | +12 V | Power, 12 V DC |
| Black | GND | Ground |
| Yellow | NC | Relay, normally closed |
| Pink | COM | Relay common |
| Blue | NO | Relay, normally open |
| Light blue | SEN / LED | Door sensor input (controller mode) / LED control (reader mode) |
| Gray | BUT / BEEP | Exit button input (controller mode) / beeper control (reader mode) |
| Orange | AL | Alarm linkage |
| Light green | AUX+ | Auxiliary linkage |
| Purple | BELL+ | Doorbell |
| Brown | BELL– | Doorbell |
| Green | WD0 / RXD | Wiegand D0 or serial RXD (DIP 5, 6) |
| White | WD1 / TXD | Wiegand D1 or serial TXD (DIP 5, 6) |
Green and white leads carry Wiegand or serial data depending on DIP switches 5 and 6.
Specifications can change between production batches. Confirm the current revision with us before placing volume orders.
Ordering options
Quote the SKU that matches your frequency, interface and mounting. Not sure? Send us your controller model and we will pick the variant for you.
| SKU | Configuration | Actions |
|---|---|---|
| SK-120-E | 125 kHz EM4100/EM4200-compatible IP65 metal keypad | |
| SK-120-M | 13.56 MHz MIFARE/NTAG UID IP65 metal keypad, configurable output format | |
| SK-120-MS | 13.56 MHz IP65 metal keypad with encrypted CPU-card support |
Where the SK-120 is used
- Exterior staff entrance or pedestrian gate on a factory or depot
- Apartment block side door using residents’ existing 13.56 MHz fobs
- Reader-mode keypad at a door already wired to a Wiegand controller
- Plant room or rooftop access door where card plus PIN is required
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SK-120 FAQ
Can the SK-120 work as a reader for my existing access panel?
Yes. It can be switched from standalone to reader mode, and with DIP switches 5 and 6 set to Wiegand it sends credential data on the green (D0) and white (D1) leads.
Which 13.56 MHz version should I choose?
The SK-120-M reads MIFARE and NTAG UIDs and lets you configure the card-number output format in software. Choose the SK-120-MS if the project calls for encrypted CPU cards rather than UID-only reading.
Is the SK-120 suitable for outdoor mounting?
It is rated IP65 and operates from –20 to +60 °C, which suits sheltered exterior doors. For fully exposed positions, the all-metal IP67 SK-140 is the higher-rated option.
How are users enrolled and removed?
Add users in setting mode or with the management cards, delete them one at a time or clear them together, copy the list to a second keypad, or manage it from a PC.
Before you buy
Related buyer guides
Wiegand vs OSDP vs RS485: Which Reader Interface Should You Specify?
Compare Wiegand, OSDP and RS485 reader interfaces: wiring, cable limits, AES-128 Secure Channel and steps for a compatible access-control migration.
Magnetic Lock Wiring Diagrams: Maglock, Exit Button, Power Supply and Reader
Maglock wiring with dry-relay COM/NC: keypad and reader diagrams, REX signals, approved egress release paths and manufacturer-specific suppression.
Fail-Safe vs Fail-Secure Locks: How to Choose for Each Door
A fail-safe lock releases when power is cut; a fail-secure lock stays locked. Learn which to use per door, how to wire NO/NC, and what egress codes expect.
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Get pricing for the SK-120
Send your card type, interface and quantity. You get a quote, lead time and compatibility notes within 24 hours — samples available for most items.