TSR | ELSITE was created as the Finnish power duo of worksite electricity, TSR Group Oy and EL & Site Oy, joined forces at the end of 2020.Construction site lighting and temporary power products together with construction supplies, generators and storage systems are our core competence. High quality, long life span, energy efficiency and robustness are key elements of our products. MBerg and WorkLite construction site led lights are the most robust lights to hard conditions at construction sites, shipyards, events and industrial needs. There are several versions of these durable lights including low voltage safety lights, battery backup lights and battery operated lights that are all made in Finland. Lights can be modified to all markets and voltages globally.Construction site lights include also Led floodlights, Led high bay lights and Led strips together with Led light masts for area ligting.For temporary power we offer sturdy and easy-to-install switch boards and all necessary cables. Switch boards are manufactured in Finland or in Sweden, Norway or the Baltics.