KA-R31S V-mount Hotswap Plate for MINI / MINI LF

›  14.4V V-mount Hotswap

›  Dedicated for ALEXA MINI/MINI LF

›  43Wh, 200W constant load cells inside

›  At least 2 minutes run time

›  Countdown seconds display

›  D-tapx2, 2-pin LEMO, USB output

›  8-pin LEMO input for power station hotswap

›  3GSDI 1-2 distribution with SDI isolater

›  Aluminum CNC unibody housing

›  MINI LF system RAB-1 Clamp2 install

›  Provide 15mm rod clamp for old MINI system

›  Multiple circuit protections


Hot-Swap Plate for

KA-R31S is a V-mount extended plate dedicated for ARRI ALEXA MINI and MINI LF install. The plate has battery cells inside, and when you changing battery, the plate will take over the power supply for at least 2 minutes, till a new battery is mounted on. So you don’ t need to switch off the cameras with this hot-swap plate.


KA-R31S matches with ARRI original MINI / MINI LF support system by connection with RAB-1 Clamp 2 (K2.0023406).

* The KA-R31S plate doesn’ t include the K2.0023406 clamp.

At least 2mins at 200W load

KA-R31S has CNC alluminum housing, 4 battery cells inside, 14.4V nominal voltage, 43Wh capacity, 200W constant high load.
The full capacity plate will ensure at least 2 minutes at 200W load even after 1000 cycle times.

120 Seconds Countdown Display

The hotswap plate provides an LCD screen to display countdown seconds when changing battery. When battery is removed, the screen will countdown from 120s. You just need to put on a new battery before it count down to 0.
The new battery will charge the hotswap plate as well. You can see the countdown seconds will go back to 120s after a period of time.

Power and SDI Distribution

KA-R31S provides:
1x 8-pin 12-16.8V 200W/16A to ALEXA MINI/MINILF
1x 2-pin LEMO 12-16.8V 38W/3A out
2x D-tap 12-16.8V 125W/10A out
1x USB-A 5V/2A output
1x 8-pin 12-16.8V DC input (For power station hotswap)

And supports 3GSDI 1 to 2 distribution, with SDI isolater inside, to prevent other camera top SDI devices damage the camera SDI port.

15mm Rod Adaptor

KA-R31S provides with a free 15mm Rod Adaptor in the package, to install on the old style ALEXA MINI 15mm rig system

Inner battery voltage

14.4V nominal, 12-16.8V

Inner battery capacity


Power load

200W/16A constant high load

8-pin LEMO output

12-16.8V, 200W/16A for ALEXA MINI / MINI LF

D-tap output x2

12-16.8V, 125W/10A each, 200W/16A in total

2-pin LEMO output

12-16.8V, 38W/3A

USB-A output

5V, 10W/2A

8-pin LEMO input


BNC x1

3G/HD/SD-SDI input

BNC x2

3G/HD/SD-SDI distribution output



Net weight

Net 875g; With package 1kg

Basic Package




  • 15mm Rod Adaptor


leave a message

Name :
Country :
*E-mail :
*Msg :

This Privacy Policy governs the manner in which SWIT collects, uses, maintains and discloses information collected from users (each, a “User”) of the www.switeu.com, swit-electronics-europe-gmbh-1.gogecko.com website (“Site”). This privacy policy applies to the Site and all products and services offered by SWIT.
Personal identification information
We may collect personal identification information from Users in a variety of ways, including, but not limited to, when Users visit our site, register on the site, place an order, respond to a survey, fill out a form, and in connection with other activities, services, features or resources we make available on our Site. Users may be asked for, as appropriate, name, email address, mailing address, phone number. Users may, however, visit our Site anonymously. We will collect personal identification information from Users only if they voluntarily submit such information to us. Users can always refuse to supply personally identification information, except that it may prevent them from engaging in certain Site related activities.
Non-personal identification information
We may collect non-personal identification information about Users whenever they interact with our Site. Non-personal identification information may include the browser name, the type of computer and technical information about Users means of connection to our Site, such as the operating system and the Internet service providers utilized and other similar information.
Web browser cookies
Our Site may use “cookies” to enhance User experience. User’s web browser places cookies on their hard drive for record-keeping purposes and sometimes to track information about them. User may choose to set their web browser to refuse cookies, or to alert you when cookies are being sent. If they do so, note that some parts of the Site may not function properly.
How we use collected information
SWIT may collect and use Users personal information for the following purposes:
– To improve customer service
Information you provide helps us respond to your customer service requests and support needs more efficiently.
– To personalize user experience
We may use information in the aggregate to understand how our Users as a group use the services and resources provided on our Site.
– To improve our Site
We may use feedback you provide to improve our products and services.
– To process payments
We may use the information Users provide about themselves when placing an order only to provide service to that order. We do not share this information with outside parties except to the extent necessary to provide the service. Those outside parties do not share, store or use personally identifiable information for any secondary purposes beyond providing the service.
– To run a promotion, contest, survey or other Site feature
To send Users information they agreed to receive about topics we think will be of interest to them.
– To send periodic emails
We may use the email address to send User information and updates pertaining to their order. It may also be used to respond to their inquiries, questions, and/or other requests. If User decides to opt-in to our mailing list, they will receive emails that may include company news, updates, related product or service information, etc. If at any time the User would like to unsubscribe from receiving future emails, we include detailed unsubscribe instructions at the bottom of each email.

How we protect your information
We adopt appropriate data collection, storage and processing practices and security measures to protect against unauthorized access, alteration, disclosure or destruction of your personal information, username, password, transaction information and data stored on our Site.
Sensitive and private data exchange between the Site and its Users happens over a SSL secured communication channel and is encrypted and protected with digital signatures.
Sharing your personal information
We do not sell, trade, or rent Users personal identification information to others. We may share generic aggregated demographic information not linked to any personal identification information regarding visitors and users with our business partners, trusted affiliates and advertisers for the purposes outlined above. We may use third party service providers to help us operate our business and the Site or administer activities on our behalf, such as sending out newsletters or surveys. We may share your information with these third parties for those limited purposes provided that you have given us your permission. Those outside parties do not share, store or use personally identifiable information for any secondary purposes beyond providing the service.
Third party websites
Users may find advertising or other content on our Site that link to the sites and services of our partners, suppliers, advertisers, sponsors, licensors and other third parties. We do not control the content or links that appear on these sites and are not responsible for the practices employed by websites linked to or from our Site. In addition, these sites or services, including their content and links, may be constantly changing. These sites and services may have their own privacy policies and customer service policies. Browsing and interaction on any other website, including websites which have a link to our Site, is subject to that website’s own terms and policies.
Changes to this privacy policy
SWIT has the discretion to update this privacy policy at any time. When we do, we will post a notification on the main page of our Site, revise the updated date at the bottom of this page and send you an email. We encourage Users to frequently check this page for any changes to stay informed about how we are helping to protect the personal information we collect. You acknowledge and agree that it is your responsibility to review this privacy policy periodically and become aware of modifications.
Your acceptance of these terms
By using this Site, you signify your acceptance of this policy and terms of service. If you do not agree to this policy, please do not use our Site. Your continued use of the Site following the posting of changes to this policy will be deemed your acceptance of those changes.
Contacting us
If you have any questions about this Privacy Policy, the practices of this site, or your dealings with this site, please contact us at:
SWIT Electronics Europe GmbH
Hochstr.17, 47228 Duisburg, Germany
Email: info@swit-europe.com
Tel: +49 020659799339