OB-K31 Metal Standalone Access Controller
The OB-K31 Metal Standalone Access Controller is a rugged, all-in-one solution designed to secure entry points for commercial, residential, and industrial applications. Built with a durable metal housing, this weatherproof unit offers reliable performance in both indoor and outdoor environments, combining keypad PIN entry and optional card reader functionality for flexible access management.
Product Parameters
| Item No. | OB-K31 |
|---|---|
| Working voltage | DC12V |
| Static current | <40mA |
| Working temperature | -20℃~60℃ |
| Working humidity | 10%~90%RH |
| User capacity | 1000 |
| Shell material | Zinc alloy frame, cover PMMA |
| Open mode | card, password, card+password |
| Card type | 125KHZ EM4001 (IC card upon request) |
| Weigand interface | Weigand26 input |
| Card reading distance | 1-5cm |
| Size | 120*76*27mm |
Application Scenarios
Commercial Buildings: Offices, shopping malls, hotels, restaurants and retail stores
Public Facilities: Hospitals, schools, airports, libraries and government buildings
Fire Safety: Fire doors, stairwells and emergency exit passages
Residential & Apartments: Entrance doors, common areas and multi-family housing
Industrial & Special Use: Factories, server rooms, climate-controlled spaces and high-traffic areas





