Your Complete Security Solution
Celebrating Over 70 Years of Excellence!
AUTOMATIC DOOR SOLUTIONS
Mechanical & Electronic Access Control solutions
Keys, cards, fobs, keypads and so much more – we have you covered!
PREVENTATIVE MAINTENANCE
Security specialists Since 1950
You can’t duplicate SLD’s years of experience!
As a certified Medeco Security Center (MSC) and winner of the 2019 Assa Abloy Prime Minister’s Award, we provide our clients with the most up to date security solutions!
Our specialists are manufacturer trained, certified and can solve any security problem – we’ve seen it all.
We are committed to exceeding your expectations and with our national coast-to-coast reach, network of over 115 Security Centers located across Canada, and 70 years of expertise, we have you covered!
So whether it’s a key or cylinder, card or reader, camera or network, door closer or automatic door operator… or any other security concern for that matter – we’re here to help!

Our clients extend across every industry!
%
Commercial
%
Institutional
%
Retail
YOU’RE PRESSED FOR TIME.
WE’RE THE EXPERTS.
SO LET’S GET STARTED.
Head Office
10 – 6965 Davand Drive
Mississauga, Ontario
L5T 1Y6
Call Us
416-504-8861