Click to expand Tap to zoom Hanwha Techwin TA-1 Onwall Back Box for TCIS-2 and TCIS-3 by Hanwha Techwin SKU TA-1 Get a Quote Features On-wall Backbox On-wall Back Box for Turbine Compact intercoms. IP66, IK10, Aluminum ally, Grey. Compatible with TCIS-2 and TCIS 3