Hollyland Spares - DB25 Male to Dual HDB15 Male Tally Cable (for Wireless Tally System)
Hollyland Spares - DB25 Male to Dual HDB15 Male Tally Cable (for Wireless Tally System) is backordered and will ship as soon as it is back in stock.
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The Hollyland DB25 Male to Dual HDB15 Male Tally Cable (Model: HL-TCB10) is an official OEM Y-split adapter cable engineered for the Hollyland Wireless Tally System.
This specialized interface cable bridges the gap when a professional broadcast vision switcher provides its tally contact-closure outputs via a standard DB25 (25-pin D-Sub) bus, while the Hollyland Wireless Tally main transmitter box utilizes high-density HDB15 (15-pin D-Sub) input terminals.
Core Functionality & Purpose
On multi-camera live broadcast sets, matching the tally cues from a production switcher to a wireless transmitter can easily turn into a cabling nightmare. The HL-TCB10 functions as a physical breakout and converter:
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Y-Adapter Expansion: It splits a single DB25 switcher master connector out into two separate HDB15 male terminals.
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Dual-Port Input Routing: This layout allows you to feed a single, consolidated DB25 switcher bus straight into two separate Hollyland wireless tally input banks concurrently, enabling larger multi-camera operations (supporting up to 8 separate tally indicators) without needing custom soldering or breakdown boards.
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OEM Pin-Out Mapping: Wired precisely to match Hollyland’s internal ground and trigger configuration frameworks, guaranteeing zero ghosting or missed red/green light triggers during high-speed switching.
Technical Specifications Matrix
| Component Attribute | Technical Specifications Detail |
| Official Model SKU | HL-TCB10 (Part Number: S-HOL-TCB10) |
| System Interoperability | Hollyland Wireless Tally System Transmitter Main Station |
| Connector Side A | 1 × DB25 Male (25-Pin Standard Density D-Sub) |
| Connector Side B | 2 × HDB15 Male (15-Pin High Density D-Sub) |
| Cable Physical Length | 4.9 feet (1.5 meters) |
| Physical Weight Profile | Approx. 10.5 oz (298 grams) |
| Outer Insulation Type | Rugged, flexible molded PVC shielding |
What's In the Box?
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1 × Hollyland DB25 Male to Dual HDB15 Male Tally Cable (1.5m)
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1 × User Manual / Pin-Out Guide Card
Switcher Deployment Check: Before running this cable, verify your switcher's manual to confirm it uses a standard DB25 dry-contact relay loop. Because this is a direct, passive wire matrix mapping, it assumes your vision switcher completes the circuit to ground when a camera goes live. If your switcher outputs active voltage tally triggers instead of contact closures, running a direct cable can cause an electrical mismatch; double-checking your hardware configuration prevents damage on set.
