The S3 series sender is an innovative solution for monitoring the level of fuel and/or water tanks in boats, trucks, coaches, caravans and recreational vehicles and is the design that launched Wema. Utilising the renowned Wema reed switch concept this popular device is available in a myriad of lengths to suit any tank. 

Wema S3 Tank Senders

Model S3-A150 through to S3-A1500
Tank Depth 150mm through to 1500mm
Resistance 240 Ohms empty – 30 Ohms full linear
Sensing Magnetic Reed Switch
Operating Voltage 12/24VDC
Operating Temp. -40℃ to +85℃
Output Resistive (US and EURO Standards)
Connection 2 x Flying leads (tinned) 290mm long (sheathed)
Mounting Threaded 1 1/4” BSP (British Standard Pipe Parallel)
Material AISI 316 Stainless Steel


Brand Wema
Shipping Weight 0.1000kg

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