Advertise Here view pricing ELK Products ELK-6050 Two-Way Wireless Smoke Detector Share this post: View Details $128.5 ELK Products ELK-6050 Two-Way Wireless Smoke Detector Similar products INSTEON Wireless Open/Close Sensor View $34.99 SECO-LARM Enforcer E-9611-2B25 Curtain IR Motion Sensor, 2 Beams – Black View $50.69 Eve Room – Wireless Indoor Sensor View $99.95 Wireless Door / Window Sensor View $18.14 SECO-LARM Enforcer SM-300Q/WH Surface Mount Magnetic Contact Switch, Normally Open View $2.78