HotAirGunController Controller for Hot Air Gun with 220v heater and 24v fan You can use Hot Air Desoldering Gun Handle FOR 858 858D 898D 852D Soldering Station Hot-air Rework Station Workable PIDs P: 60 I: 3 D: 100 Alternative PIDs If your PID control goes crazy, then try these PIDs: P: 40 I: 3 D: 30