Water temperature display The new X-Line instrument series is generally protected according to the IP67 protection class. This means that it is dust-protected and watertight up to a depth of one metre. The protective glass is slightly curved and resistant. In addition, the lens offers very good protection against fogging. The housing is made of a durable technopolymer. The front ring is polished 316 stainless steel. All instruments are illuminated. Installation is super easy. The instrument is simply inserted from the front through the 52mm / 85mm drill hole and secured from behind with a cap nut. The instruments are almost all suitable for 12V/24V (note) operation. Please order the matching multi plug for the X-Line series under item no. 443780.