Description
The Leviton DMXSM‑H81 is an 8‑input DMX merger that consolidates multiple DMX512 control signals into a single output using a Highest Takes Precedence (HTP) philosophy.
Technical Specifications
| Condition |
New/Never Used Surplus |
| Brand |
Leviton |
| Category |
Circuit Breaker |
| Part Number |
DMXSM-H81 |
| Subcategory |
Load Center Circuit Breaker |
| Product Line |
DMXSM |
| Product Type |
DMX Input Merger |
| Voltage Rating |
12–24 VDC |
| Amperage Rating |
1 A |
| Power Input |
12–24 VDC at device; AC 100–240 V to 12 VDC supply provided |
| Control Signal |
DMX512 |
| Input/Output Capacity |
(8) 5-pin XLR male inputs, (1) 5-pin XLR female output |
| Front Connectors |
XLR 5-pin (8 DMX IN, 1 DMX OUT) |
| Rear Connectors |
Hard wire (8 DMX IN, 1 DMX OUT) |
| XLR Pinout |
Pin 1: Common; Pin 2: Data –; Pin 3: Data +; Pin 4: N/C; Pin 5: N/C |
| Dimensions |
482 W × 100 D × 44 H mm (19.0 W × 3.9 D × 1.7 H in) |
| Weight |
1.16 kg (2.56 lbs) |
| Application |
Used when multiple control inputs must communicate to the same device |
Information About DMXSM-H81
The Leviton DMXSM-H81 is a professional DMX signal management merger designed to combine up to eight DMX512 inputs into a single output using Highest Takes Precedence (HTP) logic. Each input is optically isolated to protect connected lighting control systems from electrical interference and faults. Its rack-mountable 1U design, front-panel XLR connectors, and rear hardwire connections make it well-suited for permanent installations in entertainment, architectural, and event production environments. The unit includes a universal AC power supply (100–240 V to 12 VDC) and is built for reliable performance in complex control setups.
Key Features:
- Multi-Input Capacity: 8 × 5-pin XLR male inputs to 1 × 5-pin XLR female output for versatile control configurations.
- HTP Merging Logic: Ensures the highest active DMX value takes priority across all inputs.
- Optical Isolation: Protects all inputs against interference and voltage surges.
- Dual Connection Options: Front-panel XLR and rear-panel hardwire terminals for flexible wiring.
- Rack-Mount Design: 1U (19") rack-mountable chassis for easy integration into control racks.
- Universal Power Supply: Operates on 12–24 VDC with included 100–240 VAC to 12 VDC adapter.
- Durable Construction: Built for professional use with robust housing and dependable connectors.
- Standards Compliance: Fully compliant with DMX512 control protocol.
The DMXSM-H81 offers dependable, interference-free DMX signal merging, making it an essential tool for multi-console or redundant control setups in professional lighting systems.
