Honeywell Clear 7-1/2 In. 6-1/2 In. Thermostat Guard Door Locks Works in Tandem with Other

Works in Tandem with Other First Alert Alarms:In addition to functioning independently

Diquat dibromide

Tension is adjustable

Perma-SHIELD resists heat build-up by protecting the blade against gumming and corrosion

Honeywell Clear 7-1/2 In. 6-1/2 In. Thermostat Guard Door Locks Works in Tandem with OtherUltra clear chemical and UV resistant acrylic resin cover and base resist yellowing. Secure, tumbler type key lock; key removable only in locked position. Double wall barrier in ring base blocks thermostat tampering tools, yet allows air circulation. Ring base mounts directly over existing thermostat; no removal required. Meets or exceeds UL pry test and impact test standards. All covers are keyed alike.