Tilta WLC-T03-K4 比 Tilta WLC-T03-K1 多了一个Brushless wireless motor；

• 铁头亚马逊官方资料：
  Endless lens control options in the palm of your hand: The Nucleus-M allows you to wirelessly control the motors with either the FIZ hand unit or two handles. If desired, split the control between any of the possible control options for endless possibilities.
• Small, compact hand unit that offers 3-axis control: Control focus, iris, and zoom with the small, form-fitted hand unit. The iris wheel can also be set to act as a speed control for the zoom toggle.
• Perform effortlessly accurate focus pulls: The hand unit offers an intuitive focus mark system that allows you to set marks that vibrate as the hand wheel passes them. Additionally, the hand unit and handles both offer programmable hard stops to allow you to easily focus between a pre-selected range.
• Function as a one-person camera team & keep the form factor of your camera setup to a minimum
• Control any lens: from small DSLR lenses to large cinema zoom lenses

官网资料，是整套The Nucleus-M的，销售可以根据需要选一些特色卖点；

• Main Features:
• [FOCUS IRIS ZOOM] via the Right Hand Grips
• [PRECISE FOCUS] via Marking Discs, A-B Limits, and Electronic Focus Marking
• [NO MDR NEEDED] Wirelessly Control the Motors Up to 1000 Feet
• [RUN STOP CAPABLE] via the REC Button on the Hand Grips and Optional Run Stop Cables
• [COMPATIBLE] with Most Cinema Lenses via the Motor's 0.8 Gear Pitch or Included Gear Rings

The Nucleus-M is a revolutionary and highly customizable 3-channel wireless lens control system.
It allows you to have full control of focus, iris, and zoom on either the FIZ hand unit or between the two wireless hand grips. You can even split control of the channels between the hand unit and wireless hand grips as you see fit with the push of a button.
The wireless range of both the hand unit and hand grips is 1,000 feet.
The handgrips can be attached to the included rosette mounts for handheld operation and can also be attached to top bar-based gimbals with the included Nucleus-M Hand Grip to Gimbal Adapters or to ring-based gimbals with the optional Nucleus-M Hand Grip Universal Gimbal Ring Adapters.
Each motor has its own built-in motor drive that communicates directly with the hand unit and hand grips. This negates the need to mount a separate MDR to your rig, allowing for a more compact camera setup and a quicker setup time.
Simply set the motors and hand unit/hand grips to the same channel and you will have full control.
The motors allow for automatic calibration of the lens as well as manual calibration if you are using lenses that don’t have hard end stops at close focus and infinity.
The motors are designed to clamp onto 19mm or 15mm rods (with the included rod bushings). This clamp-on design allows you to easily attach and detach the motors without needing to remove any other accessories from your setup.
Every motor has a 0.8 mod, 35 tooth, 32 pitch gear attached, which is the standard gear size for cinema lenses. The torque of the Nucleus-M Motor at 14.8V is 2.5N·m
To power the motors, only one power port on your camera rig needs to be used. Simply plug the P-tap power cable into one of the motors and then daisy chain power to the rest of the motors with the short 7-pin to 7-pin cables.
The motors can be powered through a power source that has a voltage output ranging from 7.2V-24V.
The hand unit and hand grips are each powered with two 18650 rechargeable batteries (batteries NOT included). When fully charged, the batteries in the hand grips last up to 2 days, while in the hand unit they last up to 10 hours.
Remote start/stop is possible by plugging a compatible Nucleus-M R/S cable into the open 7-pin port of a motor. This then gives you R/S capabilities through the hand unit and/or the handles.
** PLEASE NOTE: The R/S cables we offer for our wooden handles ARE NOT compatible with the Nucleus-M since the engineering and pin configurations are completely different. Using the wooden handle R/S cables are not safe to use with the Nucleus-M.
Only use cables that have been developed by us exclusively for the Nucleus-M system. 

B&H 上的资料：
Tilta Nucleus-M Wireless Lens Control System Partial Kit IV  includes the Nucleus-M FIZ hand unit controller, two Nucleus-M motors, two removable lens belts (DSLR Lens Follow Focus Adapters), two motor power cables, two marking disks for the hand unit, a lanyard for the hand unit, and a battery charger unit
 

Tilta Nucleus-M FIZ Hand Unit
The Tilta Nucleus-M FIZ Hand Unit provides three-channel wireless focus, iris, and/or zoom control as part of the Nucleus-M lens control system. The hand unit features a large wood-edged focus knob, a zoom joystick, an iris wheel, and a backlit LED display window.
Select from low, medium, and maximum transmission ranges to best suit your working distance and battery reserves. The Nucleus-M FIZ Hand Unit's choice of 15 2.4 GHz channels minimizes the chance of interference in high-traffic areas. Set up to 10 soft stops with vibration for focus pulls, and calibrate lenses automatically or manually.
Wireless run/stop is available for select cameras using the hand unit and separately available cables. The hand unit is powered by two separately available lithium-ion batteries and can operate for up to 10 hours on a single charge.To power, the motors, only one power port on your camera rig needs to be used. Simply plug the P-tap power cable into one of the motors and then daisy chain power to the rest of the motors with the short 7-pin to 7-pin cables.
The hand unit and hand grips are each powered with two 18650 rechargeable batteries (batteries NOT included). When fully charged, the batteries in the hand grips last up to 2 days, while in the hand unit they last up to 10 hours.
Remote start/stop is possible by plugging a compatible Nucleus-M R/S cable into the open 7-pin port of a motor. This then gives you R/S capabilities through the hand unit and/or the handles.

Main Features:

• The 3-channel wireless lens control unit
• Control focus, iris, and/or zoom
• Short-, medium-, and long-range transmission options
• 15-channel selection minimizes outside interference
• Powered via two 18650 rechargeable lithium-ion batteries (not included)
• Up to 10-hour runtime on a single charge
• Ambidextrous design with large wood-edged knob

Tilta Nucleus-M FIZ Lens Control Motor
The Nucleus-M wireless motor includes a cine standard 0.8 Mod drive gear and a 19mm rod adapter with a bushing for mounting onto a 15mm rod. The motor features automatic or manual calibration, a display window, and high, medium, and low torque settings
 

Features

• Brushless motor with an integrated motor drive
• Cine-lens standard 0.8 Mod, 35-tooth, 32-pitch gear
• Motor clamps onto 19mm or 15mm rods (with included bushing)
• Power via separately available D-Tap cable or daisy-chain to additional motors
• Automatic and manual calibration
• For focus, iris, or zoom control
• High, medium, and low torque settings
• Status display window