STI STI-1200A-ES Stopper II Enclosed Back Box with Spanish Label

Overview

The STI-1200A-ES is a 4-inch deep enclosed back box designed to mount behind emergency call stations and addressable alarm initiating devices. The Spanish-language label variant suits bilingual facilities in healthcare, education, and commercial settings where signage must comply with local language requirements. Neoprene gasket sealing and NEMA 3R rating mean it handles outdoor weather exposure — rain, sleet, and moisture — without compromising device operation or electrical integrity.

Compatibility

The STI-1200A-ES integrates with the Stopper II® series of emergency communication stations and UL-listed initiating devices rated under UL 38 and 2017 standards. It is compatible with addressable fire alarm systems where the back box must be mounted surface-mounted or recessed behind the caller device. Consult your system documentation to confirm the specific initiating device model fits the 4-inch depth envelope.

Installation Notes

Mount the enclosure using the pre-drilled conduit entries and seal pathways as near to the box as possible using conduit or raceway — this prevents moisture ingress and maintains NEMA 3R protection. The 24VDC supply must be run through supervised low-voltage wiring per NEC 70 Articles 725 and 760, and NFPA 72 fire alarm codes. Ensure all electrical connections remain accessible for maintenance and testing. The neoprene gasket requires no additional sealing compound but should be inspected annually for degradation, especially in UV-exposed outdoor installations.