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L? h1 10M10E high efficiency horn speaker provides superior voice reproduction and sound transmission effects and is suitable for a wide range of indoor and outdoor applications. It is ideal for applications such as moving fields, parks, exhibitions, factories and swimming pools. L? h1 10M10E is a 10 W, aluminum rectangular horn speaker. The edge of the cylinder is covered with PVC profiles to prevent damage caused by impact. The rear cover of horn is made of ABS flame retardant material (in accordance with UL 94 V0 standard). The shell is pale gray (RAL 7035) and waterproof and dustproof. Basic function voice alarm these voice alarm loudspeakers are specially designed and can be used in buildings requiring PA system to meet official regulations. L1-h1 10M10E is designed for voice alarm system, and has been certified by EN 54-24, meeting BS 5839?8 and EN 60849 standards. The protection horn loudspeaker has built-in protection function to ensure that the damage of the loudspeaker will not cause the failure of the connecting circuit in case of fire. In this way, the integrity of the system is maintained, ensuring that speakers in other locations can still communicate to people in a timely manner. The connection and safety horn loudspeaker is equipped with ceramic junction box, temperature fuse and heat-resistant high temperature conductor. The built-in matching transformer has four jumper joints which can be used to select the output power rate. An optional circuit/speaker monitor board can be installed inside the horn speaker. All Bosch speakers are certified to meet IEC 268-5 power handling capacity (PHC) standards and can operate continuously for 100 hours at rated power. Bosch has also conducted simulated acoustic feedback exposure tests to ensure speakers can withstand twice the rated power in a short period of time. This ensures high reliability in extreme conditions, improves customer satisfaction, extends service life, and significantly reduces the chance of failure or performance degradation. Safety in accordance with EN 60065 standard: EN 54-24/BS 5839-8/ EN 60849 standard: waterproof and dustproof; IEC 60529; wind power in IP 65 standard: NEN 6702:2007 + A1:2008; European CE DOP certified by Bft 11 standard area