Haltech HT-059900 I/O 12 Expander Box A - CAN-based 12-Channel Kit

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Part Brand: Haltech

Part Number: HT-059900

• Universal application – compatible with CAN‑enabled Haltech ECUs (Platinum, Elite, Sport, Sprint, Pro‑Plug‑in, etc.)

• Adds 12 additional user‑configurable I/O channels via Haltech CAN network
• 4 × AVI analogue voltage inputs (0‑5 V) for sensor signals
• 4 × DPI digital pulsed inputs (0‑5 V, up to 300 Hz) for pulse or trigger signals
• 4 × DPO digital pulsed outputs (5 V/12 V pull‑up, max 1 A) for actuators, fans, pumps, etc.
• Broadcast rate ~20 ms per channel to the ECU — fast response for inputs/outputs
• User‑definable “Safe State” for outputs in event of CAN error or communication loss
• Switchable pull‑up resistors on analogue inputs — ideal for temperature sensors or low‑level voltages
• Powered via CAN bus — no extra power wiring required unless outputs are used
• LED indicators for power and status
• Supports multiple I/O Expanders on same CAN network (with unique CAN IDs), enabling up to 24 additional channels
• Physical size: 98 mm (L) × 64 mm (W) × 28 mm (H)
• Weight: ~125 g (unit) + wiring harness weight (~630 g when included)
• Power input: 8.6–16.5 V DC (via CAN bus)
• Analogue input range: 0–5 V (AVI)
• Digital input: 0–5 V pulses, up to 300 Hz (DPI)
• Digital output: 5 V/12 V pull‑up, max 1 A per channel (DPO)
• Includes CAN connection cable (DTM‑4 to 8‑pin Tyco) — 300 mm length standard

• 1× I/O 12 Expander Box A (HT-059900)
• 1× CAN cable (DTM‑4 to 8‑pin Tyco, 300 mm)
• 1× Quick‑Start / Instruction guide

The Haltech HT‑059900 I/O 12 Expander Box A is a CAN‑bus based expansion module that significantly increases the input/output capacity of compatible Haltech ECUs. By adding 12 configurable channels—analogue inputs, digital inputs and digital outputs—it gives tuners, custom builds, and performance setups the flexibility to integrate extra sensors, actuators, fans, pumps, and other devices that go beyond a stock ECU’s I/O limitations.

Installation is straightforward: connect the expander to your Haltech ECU’s CAN port using the supplied cable, assign channel mapping in ECU software, and wire sensors or outputs as needed. Since the module draws power from the CAN network, minimal wiring is required — especially useful for engine swaps, standalone ECU builds, or clean, custom harness setups. For larger or more complex builds, two expanders (Box A + Box B) can be used, providing up to 24 extra channels — depending on ECU and firmware support.

This universal module is ideal for racing, tuning, or custom‑wiring projects where additional sensor inputs and actuator outputs are necessary. Whether you are managing extra sensors (like wideband O₂, EGT, temperature, pressure), controlling multiple auxiliary devices, or building a modular wiring loom — HT‑059900 ensures reliable, scalable I/O expansion in a plug‑and‑play format.

*Parts are for USA spec vehicles, please contact us to verify fitment on JDM & international models.

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