I am the maintenance manager here at the Donald Danforth Center in St. Louis Missouri.  We have a couple hundred lock drives on site, EWA 10 and EWA 12. I’m really impressed by these drives, I appreciate their well thought out design and their reliability. I express this to those who inquire about them and recommend them any time we build new green houses on our site. 

Together with the Reichenspurner family, the Kaufland supermarket chain has opened one of Germany's most modern and sustainable greenhouses in Chiemgau - equipped with Lock power drives and the LSC 40 mechatronic limit switch.

"I am overwhelmed with such competent, nice, polite and fast customer service. I got help on the phone in no time and a detailed email with possible causes for the error and solutions to fix it. Even a video with detailed instructions was sent to me. In addition, within 1-2 days I received an offer for repair and new price of the defective drive. Very rarely encountered such perfect customer service. The quality of the products is also outstanding."

"The dairy barn, located in a residential area, was rebuilt with the aim of improving animal welfare and work management. Due to the location, it was not possible to add an outdoor yard. Nevertheless, to create an outdoor climate stimulus, the roof was partially opened and a flexible roof opening was installed. This system of sensor-controlled louvers opens and closes fully automatically in appropriate weather."

"Young plants and semi-finished plants are growing in the production greenhouse in Thiendorf, which has a total of 6.5 hectares of high-glass area. We also relied on Lock quality for our new construction project. It was a very good cooperation."

The working platform is used to perform maintenance work on the pantographs of the electric buses. After positioning the platform, people with material can be electrically transported to a height of up to 3.9 meters. The roof of the bus can then be accessed via the push units and the fold-out basket railing in order to carry out the maintenance work there.

Lock’s LSC 40 limit switch arrives at long-time partner Metrolina Greenhouses. Here System Engineer Jeff Woolsey shows the first unit - ready to install.

New construction project of a 6ha production greenhouse - equipped with Lock power drives. In the future, radishes, tomatoes, cucumbers and cut roses will grow there.

"We upgraded our Curtains control system through Lock. Together with our electrician, Lock implemented their control concept from consultation to installation. Now the Curtains open and close fully automatically according to temperature and wind, which brings an optimal stable climate and a daily time saving. The special feature is that the control system is connected to the bedding robot and the curtains are closed during bedding. We are excited about the possibilities of the control technology."

"We still have such an antique - our drive is from 1963 and so it has been in operation for 56 years! That speaks for itself."

"Lock supported me in the technical engineering of the drive solutions. Our horse barns can even be operated self-sufficiently with a solar panel. For this, Lock used a special 24V drive that fits to our time control."

"As a loyal Lock fan, we always trust in German quality."

"We use Lock drives for natural ventilation systems. These are various types of ventilation flaps, insulated lifting windows and movable box lids."

"I am very impressed with the quality of Lock equipment and highly recommend it. Lock products are very long lasting and easy to install, but in case assistance is needed Lock’s technical support is great and always available."

"Side ventilation and roof ventilation are solely by Lock."

"Our drive has been running since 1968 - that speaks for Lock's quality. The drives are still running perfectly."

Vegetable production China - 40ha greenhouse area

"All our turkey stables are up to date and offer our animals the best animal welfare. The lifting windows, the movable ridges and the fully automated roller ventilation protect the animals and allow the best climate in the stable."