STI STI-3150 — Weather Stopper cover for a manual pull station, without horn, with a 2 in. conduit spacer and weather gaskets for surface mounted devices.
The Stopper II is a clear, tamperproof polycarbonate shield on a frame that fits over an existing pull station. Lifting the cover to reach the station draws attention to whoever lifted it, which is what cuts casual false alarms. This model has no horn and no battery, so it is purely a physical and weather guard.
- No horn and no 9 V battery, unlike the STI-1100 and STI-1150 horn models
- Supplied with a 2 in. (50 mm) conduit spacer and closed cell gaskets
- Surface mount dimensions 7.2 in. wide × 10.2 in. high × 5.5 in. deep
- UL and cUL certified, file S2466; weather-resistant seal to NEMA 3R, IPX4 equivalency
- STI notes for this model that IP equivalency may vary with the conduit inserts chosen
- Polycarbonate working range -40 to 250 °F; gaskets replaced after five years
The unsuffixed number is the standard unit carrying the In Case of Fire label; -NR is the same cover unlabelled. In the gasketed Weather Stopper group the STI-1250 is flush without horn and the STI-1155 surface with horn; the ungasketed indoor equivalent is the STI-1230.
FAQ
Does the STI-3150 have a horn?
No. It is the Weather Stopper without horn; horn models use a 9 V battery.
What is the spacer for?
The spacer is used for surface-mounted or oversized manual stations; longer screws are provided for it.
How is it weatherproofed?
Neoprene gaskets installed behind the spacer and/or the frame provide weatherproofing for outdoor pull stations.
Will it fit my pull station?
The Stopper II frame fits most manual pull stations.
