Variable Speed Controllers

An electronic 7 day timer with automatic summer/winter time settings. Two outlets, 8 on/off programs.

Timing capacity: 23 hours / 59 minutes / 59 seconds Clock feature Last time set memory Lay flat on a bench, use the flip-open stand for a vertical view, carry it on a lab coat with the convenient pocket clip, or use the magnetic back for metal surface attachment Requires one LR44 battery (included) Features a Certificate of Calibration and individual serial number, these electronic timers are tested and calibrated in H-B's exclusive triple accredited/registered ISO/IEC 17025:2017, A2LA accredited laboratory (Cert #2448.01), against equipment whose calibration is traceable to NIST. ...

Choice of vibration, sound and/or light alarms makes this timer perfect for high noise locations. Switchable timing capacity: 19 hours: 59 minutes / 99 minutes: 59 seconds Count direction: up/down; displays elapsed time after countdown Last time set memory Vibration, light and loud buzzer sound alarms can function at one time, or be independently turned off Key press confirmation feature gives an audible indication of data entry Lay flat on a bench, use the flip-open stand for a vertical view, carry it on a lab coat with the convenient pocket clip, or use the magnetic back for metal ...

Single channel timer has three key operation for ease of use. Timing capacity: 99 minutes: 59 seconds Count direction: up/down Last time set memory Audible alarm; displays elapsed time after countdown Mounting options: lay flat on bench, stand on edge for vertical view, magnetic back for metal surface attachment Requires one AAA battery (included) Features a Certificate of Calibration and individual serial number, these electronic timers are tested and calibrated in H-B's exclusive triple accredited/registered ISO/IEC 17025:2017, A2LA accredited laboratory (Cert #2448.01), against ...

Automatic pressure switch allows for fully automatic operation of dryer booster fan. Fan runs for 10 minutes when positive pressure is sensed in the duct line then shuts off and turns on again as needed.