Secolink GSV4B Economy Class Alarm System with GSM/GPRS Communicator and Keypad KM20B

The Secolink GSV4B is an economy-class alarm system ideal for securing small residential or commercial spaces. Designed for flexibility and ease of use, the system includes the GSV4B control panel with an integrated GSM/GPRS communicator, a KM20B keypad, and a durable fireproof plastic enclosure with an integrated transformer. With support for up to 7 zones, remote control via mobile apps, and event reporting over GPRS, this all-in-one security solution provides reliable intrusion detection, voice notifications, and full remote system access. It is suitable for both professional installations and advanced home security setups.

Product Features

Integrated GSM/GPRS Communication

Enables real-time alarm reporting and remote access using mobile apps, SMS, voice messages, and GPRS. Ensures continuous connectivity to monitoring stations or end-users.

Expandable Wired Zones

Supports 5 onboard wired zones with the capability to extend up to 7 zones using the keypad. Provides extensive coverage for small premises.

Programmable Outputs (PGM)

Includes 1 onboard programmable output and supports up to 3 PGMs for triggering sirens, strobes, relays, or automation functions.

Advanced Zone and PGM Definitions

Offers multiple programmable options for zones and outputs, including fire, burglary, medical, gas detection, and more. Enhances security configuration precision.

Mobile App Control

Compatible with the SECOLINK PRO mobile app for both Android and iPhone. Allows users to arm, disarm, and monitor the system remotely.

Alarm Notification Options

Delivers alerts via GSM calls, SMS, and pre-recorded voice messages. Keeps users informed in real-time in case of intrusion or emergency.

Detailed Event Logging

Logs up to 512 events with the KM20B keypad connected, helping users and installers track system activity over time.

Secure, Fireproof Casing

Supplied in a fire-resistant plastic case with integrated transformer, ensuring system durability and protection in all environments.

Multiple Partition and Arming Modes

Supports a single partition and several arming modes: Away, Max Away, Night, and Stay. Offers flexible security for various times of day or occupancy levels.

Wide Language and Interface Support

Supports SMS and keypad interfaces in multiple languages and character sets, making it suitable for diverse user regions.

Product Specifications

• Control panel: GSV4B with integrated GSM/GPRS communicator
• Keypad: KM20B with 20 keys and two onboard zones
• Built-in wired zones: 5 (expandable to 7)
• Programmable outputs (PGM): 1 onboard, up to 3 total
• Partitions: 1
• User codes: 5
• Event log size: 256 (up to 512 with keypad)
• CMS reporting: CID via GPRS using protocols E2, FIBRO, CSV, SIA
• Remote access: Mobile app (SECOLINK PRO), SMS, and calls
• Voice message support: Yes (recordable clips)
• Data bus protocol: KRBUS
• Zone types: NC, NO, NC/EOL, NO/EOL, NC/DEOL, NO/DEOL
• Zone sensitivity range: 0.1 – 2.5 seconds
• Arming modes: Away, Max Away, Night, Stay
• PGM attributes: Inversion, latch, pulsation, pre-alarm, status notifications
• Rated voltage (AC): ~20 V (min 16 V, max 22 V)
• Max long-term output current: 0.7 A
• AUX output: 12 – 13.9 V, 0.25 A max
• BELL output (with battery): Up to 2 A
• Battery charge current: Up to 0.25 A
• Battery disconnection threshold: 9.5 V
• Recommended backup battery: 12 V, 7 Ah
• Certification: EN50131 Grade 2, ROHS compliant
• Operating temperature: -10°C to +50°C
• Control panel dimensions: 120 mm x 64 mm
• Programming interface: USB and online via www.alarmserver.net

Keypad KM20B Specifications

• Onboard zones: 2
• Display: 2-row LCD, 16 characters each
• Fast keys: 32 programmable
• Data protocol: KRBUS
• Maximum wiring distance: 300 m
• Power supply: 9 – 14 V DC
• Backlight: Blue display, yellow keypad
• Sound: Built-in buzzer
• Current draw: <100 mA with backlight, <50 mA without
• Supported character sets: Latin, Russian, Greek, East/West European, Azeri, Turkish, Scandinavian
• Operating temperature: 0°C to +50°C
• Keypad dimensions: 115 mm x 95 mm
• Settings and firmware interface: USB