FNIRSI SAG-55 Intelligent 550W Hot Air Gun

The FNIRSI SAG-55 Pro is an intelligent 550W hot air rework station built for SMD soldering, desoldering and heat-shrink work on FPV electronics such as ESCs, flight controllers and VTX modules. A microcontroller-driven PID loop holds temperature steady while the brushless fan keeps airflow quiet and controllable during precision work.

Key features

• Temperature adjustable from 100°C to 450°C with PID control for stable, repeatable heat.
• Brushless fan with 1–20 step airflow control, up to 80 L/min, for fine control around delicate SMD parts.
• Magnetic sensor in the Pro smart sleep stand wakes the gun on pickup and drops it to standby when set down.
• One-touch hot/cold air switch speeds up cooling and extends heating-element life.
• Three savable temperature and airflow presets for fast switching between tasks.
• 1.54-inch 240×240 LCD on the handle shows temperature and airflow at a glance.

Specifications

• Input: 200-240 V AC, 50/60 Hz
• Max power: 550W
• Temperature range: 100–450°C
• Airflow: up to 80 L/min, 20 adjustable levels
• Heating tube: 80mm long, 21.6mm diameter, fits 850-series nozzles
• Display: 1.54-inch LCD (240×240)
• Auto-off: never / 5 / 10 / 15 minutes
• Operating noise: under 65 dB
• Handle size: 260 x 60 x 40 mm (without nozzle)
• Cables: 1.2 m silicone handle cable, 1.2 m AC power cord
• Weight: approx. 1391 g including accessories

Comes with a 6mm nozzle, power adapter and the Pro smart sleep stand — pair it with a fine conical-tip soldering iron for complete SMD rework coverage on drone stacks.