The RE-F100 is an optional frequency monitor that is usable in addition to the Motor Controller [RE-C100] and is compatible with the Ring Pump RP-TX, RP-HX series. Ring Pump - RP-TX series Ring Pump - RP-HX series RE-F100 is the optional frequency display monitor that can connect to the RE-C100 controller. Operation of the pump is possible by RE-C100 only. However, if additional functions are needed, such as adjusting to increase the rotational speed, purchasing the RE-F100 may be helpful as a visual tool. Please feel free to explore other similar components, such as our standard controller or the programmable motor controller for stepper motor pumps available as optional controllers for the Ring Pump RP-TX/RP-HX. Motor Controller [RE-C100] Please feel free to get in touch with us for more details about this frequency monitor for the Ring Pump RP-TX/HX series. For details on our other controllers, please also visit our Controllers / Driver board Matrix technical information page. Note 1: Details such as specifications, etc., may be changed without notice. Note 2: Aquatech Co., Ltd provides product details and images.