This module attaches to the bottom of the spring. The studding length under this module can still be used to add additional masses and damper accessories.
This accessory requires the HVT14C to run the motor which rotates and with the eccentric mass produces vertical periodic vibration of the attached spring. The frequency at which the motor excites the system is controlled from the HVT14C unit which the proximity sensor also plugs into.
This unit is NOT intended for use in conjuncture with the HVT14G module.