4G VoLTE Audio Keypad GSM Intercom | 1-Way Access Control

The K1-4G 4G VoLTE Audio Keypad Intercom is a professional GSM access control device designed for single-entry applications. It combines high-quality voice communication with secure access management, enabling users to control entry points via mobile or landline — without the need for traditional intercom cabling.

When a visitor presses the call button, the intercom sequentially dials up to five programmed phone numbers until answered. Users can then communicate with the visitor and unlock the gate or door remotely using their phone keypad.

The integrated illuminated keypad supports up to 1,000 PIN codes and 100 temporary codes for flexible entry management. With 4G VoLTE connectivity and fallback to 3G and 2G, the K1-4G delivers clear audio and reliable performance even in challenging signal areas.

Built for long-term reliability, it features a vandal-resistant stainless-steel enclosure, LED backlighting for night-time visibility, and weatherproofing for outdoor use. Configuration and management can be performed remotely via web, app, or SMS, making it ideal for residential gates, commercial entrances, and private driveways.

• 4G VoLTE connectivity with fallback to 3G/2G networks

• One call button with up to five programmed phone numbers

• Built-in keypad supporting up to 1,000 PIN and 100 temporary codes

• Caller ID recognition for free, contactless entry (up to 1,000 users)

• Remote configuration via WebAlarm™, EasySet Web, Android or iOS app

• Two relay outputs for gate and door control

• Two configurable alarm inputs

• Wiegand input/output for third-party keypad or reader integration

• 20,000-event log with timestamps

• Firmware updates Over-The-Air (F-OTA)

• Stainless-steel, vandal-resistant IP-rated housing for outdoor environments

• Network: 4G VoLTE with fallback to 3G/2G

• Power Supply: 12–24 V AC/DC

• Current Consumption: 250 mA (active), 80 mA (idle)

• Relay Outputs: 2 (NO/NC configurable)

• Inputs: 2 alarm inputs

• Wiegand Interface: Input & output supported

• User Capacity: Up to 1,000 PIN codes and 1,000 Caller ID users

• Call Capacity: 5 phone numbers per call button

• Event Log: Up to 20,000 events

• Dimensions: 290 × 113 × 56 mm

• Material: Stainless steel, vandal-resistant

• Antenna: External SMA antenna (included)

• SIM Card: Compatible with ControlFreq IoT multi-network SIM

The K1-4G integrates with the WebAlarm™ cloud platform for full remote management and monitoring.

Cloud Features:

• Real-time event logging and alerts

• Add or remove users and PINs remotely

• Configure access schedules and permissions from anywhere

• Receive SMS or email notifications for specific events

• Manage multiple intercoms across different sites from one dashboard

WebAlarm™ provides complete visibility and control, ensuring dependable and centralised management of all GSM intercom systems.

• Residential gates and entrances

• Private driveways and garages

• Commercial sites and business parks

• Apartment or office access points

• Industrial and warehouse facilities

K1-4G Datasheet (PDF)