Retrotec’s Model 500 Commercial DucTester is the newest and most robust duct tester Retrotec has ever designed. Nothing else on the market comes close to its extreme performance in such a compact, lightweight handheld system.
A completely new motor design allows for precise fan speed control like never before. The Model 500 is ideal for those needing to reach high flows & advanced control.
The Model 500 has a significant improvement in the high-resolution control over motor speed, which provides users with a lot more versatility.