The Program Lock Key protects from incidental or operator tampering with the programmable settings on the side of select BF, HF and NF-Series models. To adjust the settings, the Program Lock Key must be plugged into the STC40, HTC-35, or FT-30D Transformer. The RPM & Soft Start settings can only be adjusted with it.

The program lock key is necessary for these BF, HF and NF-Series models:

■ BF-Series Mini Screwdriver Models
■ BF-Series Standard Models
■ BF-Series Soft Stop Models
■ NF-Series Standard Models
■ NF-Series Soft Stop Models
■ HF-Series Models

The program lock key cannot be used with these BF-Series and NF-Series models:

■ BF-Series Standard Plus Models
■ BF-Series Angle And Auto Reverse Models
■ BF-Series Soft Stop Plus Models
■ NF-Series Standard Plus Models