Stanley Black & Decker has agreed to buy Niscayah, a European electronic security and monitoring company for $1.2 billion, including assumed debt. Stanley will pay $18.00 per share in cash (in Swedish currency) for the Stockholm-based company, 24% more than an all-stock offer by another firm, Securitas AB, and a 15% premium to Niscayah's stock price at close on June 23, 2011.