Features 1.Using industrial-grade electronic components and structural parts so that the working temperature of the product can reach -30 - +75 . 2.Super strong waterproof structure design has the waterproof and dustproof grade of IP67. 3.The stainless steel front cover is made of 316L material which can be used for a long time even in the environment of acid alkali and humidity. 4.The whole series adopts ultra-wide working voltage design long-term working voltage of 9-32V up to 36V (1 minute). 5.Ultra-low power consumption design 52mm series small table working current 60mm. 6.Applicable to various boats RV etc. accurate display of the sewage level with high precision instructions repeatable and versatility reliability and stability driving and control is relatively simple and so on. Specification Condition: 100% Brand NewItem Type: Water Tank Level GaugeMaterial: Stainless Steel + Nickel-Plated PlasticWhich Indicates That: EHFInput Signal: 0-190ohmConnection: Red-battery (+ 9-32VDC) blue-battery (-) black-signal orange-black light (+ 9-32VDC)Protection Grade: IP67 can work at 1m/3.28ft underwaterSize: Approx.52mm / 2in Package List 1 x Water Tank Level Gauge1 x Connection Cable1 x Instruction Manual