Ensure your premises remain secure with our No Portable Transmitters To Be Used On These Premises Sign. Designed to reduce interference with sensitive equipment, this sign is ideal for locations where radio transmitters pose a risk, such as hospitals, laboratories, and secure facilities. Manufactured in the UK from durable materials, it is available in a choice of sizes and finishes to suit indoor and outdoor environments. This prohibition safety sign complies with ISO 7010 standards and supports Health and Safety Executive (HSE) guidance for workplace safety. Clear bold text and a universally recognised symbol make it easy to identify and enforce the restriction effectively. Pre-drilled holes make installation quick and hassle-free.