How PrecisionDrive Automotive Achieved 18 Months of Zero Line Stops with Hotus RFID Industrial PDA and Rugged Tablet for JIT Parts Tracking

How PrecisionDrive Automotive Achieved 18 Months of Zero Line Stops with Hotus RFID Industrial PDA and Rugged Tablet for JIT Parts Tracking

PrecisionDrive Automotive, a North American Tier-1 supplier to Ford, General Motors, and Toyota, produces 1.2 million braking and steering systems annually across a 12-acre facility with four main assembly lines. For years, their just-in-time (JIT) production system operated under a constant threat: material misdelivery. Every morning at 6:00 AM, the pre-production meeting started with the same slide—"Last Night's Line Stops." The operations VP, Mark Henderson, recalls the nightmare. "That $220K mistake was the breaking point. A forklift driver on the night shift delivered Model A brake rotors to the Model B line. By the time we caught it, 27 cars had been assembled with the wrong parts. The entire batch had to be pulled back. Ford’s quality engineer camped out in our plant for two weeks after that. He didn't leave until we proved we could fix the root cause." The root cause was simple but systemic: barcode labels, smeared by cutting oil and metal dust, were unreadable. The manual scan error rate hit 0.7%. "When the driver said 'the barcode was blurry,' it wasn't an excuse—it was a system failure," Henderson adds. The search for a solution led them to Mini PC and industrial device manufacturer Hotus Technology.

The Search for a Reliable JIT Parts Tracking Solution

PrecisionDrive’s JIT system demands parts arrive at the line within a ±15-minute window. The legacy barcode system could not keep up. The operations team evaluated three alternatives before selecting Hotus. First, upgraded barcode scanners were considered, but these still relied on manual, piece-by-piece scanning—treating the symptom, not the disease. Second, machine vision systems were tested but failed in the oily, dusty environment, with false read rates spiking above 10%. Third, Bluetooth Low Energy (BLE) tags were trialed, but metal shelving and pallets created severe signal shielding. The winner was a combined solution from Hotus: UHF RFID for automatic, bulk reads through metal racks, and a rugged tablet for real-time in-cab guidance. The decision came down to three factors: the RFID industrial PDA could read an entire pallet of 40 boxes in three seconds without stopping the forklift, and the HTNJ10B rugged tablet provided a bright, 10.1-inch display that remained readable even under forklift vibration and harsh factory lighting.

Deploying the Hotus RFID Industrial PDA for WIP Inventory

The first phase of the deployment focused on inbound material tracking. PrecisionDrive installed RFID gate reader channels at every raw material receiving dock. When a forklift carrying a pallet of parts passes through the gate, the system automatically reads all 40 boxes of RFID-tagged components in under three seconds. This replaced the previous 12-minute manual process of scanning each box individually. On the production floor, three-shift inventory clerks now use the Hotus RFID industrial PDA for work-in-progress (WIP) counts. The device operates reliably across the plant's temperature range, from -10°C in the raw goods warehouse to 50°C near the heat treatment ovens. Its IP65 rating protects against the metal dust and coolant spray that are constant threats on an automotive line. "The night shift supervisor told me that a WIP count used to take two hours and often required overtime," says Henderson. "Now he walks the line with the PDA for 15 minutes and the count is done. It's that simple."

Integrating the HTNJ10B Rugged Tablet for Forklift-Mounted JIT Delivery

Every forklift in PrecisionDrive’s fleet was fitted with the HTNJ10B rugged tablet, mounted on a dedicated bracket to the right of the steering wheel. The 10.1-inch display serves as a real-time material demand board, showing the exact assembly line, part number, quantity needed, and a countdown clock for the ±15-minute delivery window. Forklift drivers no longer rely on paper pick lists or static clipboards. The tablet automatically receives transport tasks from the warehouse management system (WMS), with route optimization guidance built into the interface. If a part’s temperature exceeds a threshold during transport or if the delivery window is about to be missed, the tablet triggers an audible and visual alert. "One of our drivers joked that this tablet knows his next move better than his wife does," Henderson laughs. "He’s not wrong. It tells him exactly which pallet to grab, which line to go to, and when he needs to be there. There's no guesswork, no paper, and no excuses." The system has virtually eliminated the manual errors that plagued the old process.

Quantified Results: From $220K Loss to 18 Months Zero Line Stops

The impact of the Hotus system was immediate and measurable. The following table compares performance metrics from the 12 months before deployment to the 18 months after full implementation.

The most dramatic change was the elimination of line stops. In the 18 months since the Hotus system went live, PrecisionDrive has not recorded a single material-related production stoppage. The $220K loss from the Model A/Model B incident has not been repeated. Forklift drivers now spend 94% of their time moving parts instead of searching for them, and OEE jumped from 72% to 91%—a gain driven almost entirely by eliminating material wait times.

Customer Endorsement: A Cleaner, Faster Production Floor

Mark Henderson is unequivocal about the return on investment. "We just passed Toyota’s annual supplier quality audit. The auditor said our material traceability system was the cleanest he had ever seen. He spent 15 minutes looking at the data logs from the Hotus RFID system and then signed off. That never happens." The benefits have extended beyond compliance. "Last month, we increased throughput on our fourth assembly line by 12%," Henderson adds. "We didn’t buy a single new machine. We just stopped waiting for the wrong parts to show up. The Hotus system turned our JIT dream into a daily reality. If you are a Tier-1 supplier struggling with parts tracking, stop looking at band-aids. Call Hotus."