Display
2-inch color LCD smart display
Product Overview
The Harmonai KTM-228 is a smart power sequencer with integrated display, engineered specifically for professional audio engineering and stage lighting applications. Equipped with a 2-inch color LCD screen, it displays real-time input voltage, date, clock, and per-channel on/off status—providing immediate visibility into system operation. It offers 8 controllable outputs + 2 bypass outputs, with independently adjustable power-on and power-off delay times ranging from 0 to 999 seconds—ensuring orderly startup and shutdown of connected equipment.
The unit supports an RS232 external control interface. Each device includes built-in ID coding detection and configuration for remote centralized control. Multi-unit cascading with automatic cascade detection enables efficient power management across large-scale systems. Ten user-configurable scene presets allow quick saving and recall of device power states. Built-in under-voltage and over-voltage detection with audible/visual alarm ensures reliable equipment protection.
Maximum Input Current
63A
Maximum Total Output Power
12000W (requires user-installed 10 mm² cable)
Per-Channel Output Rating
13A / 2500W
Output Channels
8 controllable + 2 bypass outputs
Delay Adjustment
Adjustable from 0 to 999 seconds
Output Sockets
Phosphor-bronze universal sockets
Bypass Function
Independent per-channel bypass; supports ALL or individual bypass modes
Panel Lock
LOCK function prevents accidental operation
Scheduling Function
Integrated real-time clock chip enables scheduled power-on/off by date and time
Cascading Control
Supports multi-unit sequential control with auto-detection and setup
Communication Interface
RS232 interface for integration with external control systems
Remote Centralized Control
Device ID coding detection and configuration
Scene Management
Save and recall up to 10 device power state configurations
Safety Protection
Under-voltage and over-voltage detection with alarm
Power Supply Method
Transformer-based
Power Cable
3×6 mm² cable, 1.5 m long (no plug included)
Dimensions
482 × 292 × 45 mm
Net Weight
4.3 kg
Typical Applications
This KTM-228 smart power sequencer is ideal for audio system installations, stage lighting power management, conference room AV control, KTV rooms, broadcast studios, multi-function halls, and exhibition displays. Its 8 controllable outputs ensure devices power up/down in sequence—eliminating inrush current surges on the mains. RS232 control and multi-unit cascading enable intelligent, scalable power management for large systems. Under/over-voltage monitoring and alarm provide robust equipment protection.
For detailed specifications, bulk pricing, or technical support, contact the Harmonai professional team.
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