YMER-3 wireless F/I/Z with LenSaver Calibration™
The Hedén Ymer-3 is a high-end wireless control system for Focus / Iris / Zoom that has been designed to be dependable. As you would expect from a Hedén product the motors and the motor control is very precise and direct with no lag. 

The system has unique functions that make the system very easy to use, like:
LenSaver manual calibration, a much safer and easier way of manually calibrating.
Manual override that makes it possible for an operator to take manual control of the lens without removing the motor or recalibrating the system.
Lens mapping on focus, makes lens changes quick and easy. (
Mounting points on the transmitter makes it easy to attach other devices.
The motor control is very accurate and with the new Hedén motors M26VE-LX and LM30 the response and top speed is extremely fast, all in a small package and with high torque.
Lensmapping, on focus only and initially in feet.
The wireless transmission uses a very robust automatic frequency hopping technology without the need to set, and change channels manually.  The range is up to 500 meters /1600 feet, line of sight.
  
Specifications
YMER-3 with LenSaver Calibration™
Independent 3-channel F / I / Z control
Lens mapping function on focus, makes it quick to change lenses. 
Large OLED display with great readability
Manual Override™ – the DP or Camera Operator can take manual control of the lens from the focus puller
Small 3-channel receiver
Wireless transmission up to 500 meters (1640 feet) line of sight via industry-leading wireless control allowing for the fastest response of any follow focus system on the market
Easy replaceable standard Sony battery with long operational life (not included)
 
Specifications (YMER-3 Hand unit):
Length (ex antenna): 174mm / 6 7/8”  (incl. antenna): 205mm / 8 1/16”
Width: (incl focus knob) 136mm / 5 3/8”
Wireless transmission up to 500 meters (1640 feet) line of sight via industry-leading wireless control allowing for the fastest response of any long-range follow focus system on the market.
Power source: Sony NP-FM500H compatible battery (not included)
 
Specifications (YMER-3 Receiver motor driver):
Drives up to three digital Hedén motors
Three independent wireless channels
Length (ex antenna): 100mm / 4”
Height: 26mm / 1”
Width: 61mm / 2.4”
Works with Hedén motors M21VE-L, M26VE, M26VE-LX, VM35, LM30 and CM55
Range: Wireless transmission up to 500 meters (1640 feet) line of sight
Power source: 10-24V