Throughout the years, Grand Lake residents have continually relied on Pinnacle Security to satisfy their home security needs. Our systems are customized to each home or business, ensuring protection at every point. Security systems for homes, apartments, and businesses are Pinnacle Security.s specialty One of the biggest benefits of teaming up with Pinnacle Security is top of the line monitoring. Contact a Pinnacle Security representative about protecting your family, your business, and your possessions today.