Manufactures VTG open-area sounders, VSO base sounders, VXB visual alarm devices and door retainers from Waterbrook Estate, Alton. Published approvals include LPCB certificates 2831-CPR-F2044 and 2831-CPR-F0095 to BS EN 54-3, Intertek 0905-CPR-00473 to BS EN 54-23, and VdS approvals G0205137 and G0208012, with marine MED and ABS variants and LPCB-certified ISO 9001:2015.