Protos Wireless Load Cell Handheld Readout (800m Range)

Simplicity during the set up of a rigging system is key. All disciplines put the rigger under pressure to speed up and allow them to attach loads to the hoists and trusses. Although every rigger is convinced of the added value of load cells, they are not used when they are too time consuming to install. The PROTOS Wireless Load Cell system is as simple as a regular shackle. The PROTOS Handheld Remote follows this simplicity and allows you to step through the available wireless load cell shackles. Wherever you are on the stage, without connecting wires or installing computers. The easiest way to check the load on a hoist before it is lifted.

The PROTOS PLCS-WL-HR, is a roaming handheld that can be used to view the reading supplied by an unlimited number of PROTOS Load Cell shackles or Windspeed meter transmitter modules. The transmitter module Data Tags or IDs do not need to be known beforehand. The handheld will automatically wake any module on the same channel and group key. An internal list is maintained of the top number of transmitter modules ordered by signal level and a Next key on the handheld allows cycling through this list. When in communication with a particular transmitter module the LED on that module is activated. This provides visual feedback of the selected and currently viewed module. The LED output can also appear optionally on the digital output.

The entertainment industry is developing at a fast rate in order to keep up with the latest developments. As the hunger for state of the art shows keeps growing, concerts, plays and shows are constantly evolving as each itteration has to be more specatular than the last. As a result rigging has taken a prominent role in almost every show.

Rigging plots have become more complex due to performers, props, construction and the like being utilised as premium parts of the show. In this landscape, being able to measure the load that you’re lifting is essential for safe working conditions, to protect people and priceless equipment.

For this, we have developed a comprehensive range of force monitoring equipment for the entertainment industry. A complete line of wireless and wired daisy chain loadcell shackles ranging from 3.25 to 4.75 Tonnes is available for in and outdoor use thanks to the use of IP67 rated enclosures.

The shackles are equipped with a unique centralising bobbin for precise measuring of the load. The daisy chain loadcells can be run with up to a 1000 meters of wire and can be used in groups of up to 32 units. The wireless loadcell receivers have a range of up to 800 meters, this can be further extended by 800 meters when using the PROTOS active repeater. Using the repeater also makes it possible to circumvent signal blocking obstacles.

The force monitoring software can be installed on a computer or tablet with Windows OS installed. Personalised settings, configuration and layout of the soft- and hardware can be easily achieved with their quick start guide.

Also available is the wireless handheld receiver for quick reverence of individual loadcells. The handheld will wake the loadcells up when in range. Other devices PROTOS offers are an integratable wireless wind speed meter, power pack, a solar panel to charge it that can be of great value when having long term setup and many more products.

For users with more specific needs, we have a GPRS transmitter unit available, which is able to send an email or SMS to any phone in the world as soon as a user determined limit, such as for example high wind speeds or loading limits, has been reached. Sudden changes in weather conditions can be very problematic, but with this unit, surprises like an overload when there is no rigger present on site can be mitigated.

To improve safety, with a focus on the flexibility and ease of use that this industry needs. Making an intuitive and affordable solution to measuring the forces on the loads you’re lifting, or the structures you’re building!


Power Supply Voltage2,5 to 3,6 Vdc
Power Supply active35 to 40 mA
Power Supply low power mode120 to 160 μA
2Ahr battery life standby mode18 months
2Ahr battery life continuous operation35 hours
IP ratingIP67
Operating temperature range-10 to 50 ℃
Storage temperature excluding batteries-40 to 85 ℃
Humidity0 to 95 %RH
Dimensions90mm x 152 mm x 34 mm
Title Type Size
PROTOS Force Measure System application/pdf 1 MB