Transducer spare discs and removal tool for your electric wall fire. Optimum position for transducer in the water is 5cm. Ultransmit M-011B MFD 201312 DC24V 650mA or M011B-1C A3 4414 #CHM4312. Fits For DIMPLEX RTOPCS20, RTOPW20, RTOPI20BR,RTOPI20CH BBK20 (Series A-D) BBK20 (Series E) BRG20 (Series A ) DNV20CH (Series A-Onward ) DNV20AB (Series A-C) DNV20BL (Series A-Onwards) DNV20BR (Series A-C) MFD20 (A) OKT20 (Series A) RDY20 (Series A-D) RDY20 (Series E) SCR20 (Series A) SCR20 (Series K) TAH20 (Series A) TAH20 (Series E) WBK20 (Series A) WMR20 (Series A) ALM20 (Series A) AUB20 (Series A) CAS600 CAS400NHLL CAS400HLL CAS600NH RTOPCS20 RTOPW20 RTOPI20BR RTOPI20CH SVT20 (Series A). Note: If no mist is produced or if the fire goes out after 30 seconds, the transducer may need to be replaced. There are several other components that can also cause insufficient mist or premature shutdown - such as a faulty sump fan unit, buildup of calcium deposits, insufficient/incorrect water level in the tank, faulty lights, damaged mist nozzles, or improperly installed sensors. The sensor has a service life of approximately 1000 hours. Replacement CDs and/or removal tools must be purchased separately. Spare discs are not included. High quality, fully compatible replacement/spare parts. 【High-Quality Materials】Crafted from premium, durable materials to ensure longevity and superior performance. Each product is meticulously tested to meet high standards of quality and safety. 【Exceptional Performance】Engineered for high efficiency and effectiveness, this product delivers outstanding results every time. Its advanced features ensure consistent performance, making it a reliable choice for your needs 【User-Friendly Design】Ergonomically designed for ease of use, this product offers intuitive controls and a comfortable grip, making it perfect for both beginners and experienced users. 【Eco-Friendly and Sustainable】Made with environmentally conscious practices, this product is eco-friendly and contributes to sustainability efforts. It is designed to minimize waste and reduce environmental impact. 【Versatile Functionality】This product is multifunctional and can be used for a variety of tasks, providing you with the flexibility and convenience needed to handle multiple uses with a single tool.