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![Dwyer OLS-10 Optical level switch | 316 SS/Polysulfone wetted materials. | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/ols_pic_20b82244-44d7-43f4-9731-5c4df6777a8f_medium.jpg?v=1719999431)
OLS-10 | Optical level switch | 316 SS / Polysulfone wetted materials. | Dwyer
Brand: Dwyer
SKU: OLS-10
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![Dwyer L8 Liquid level switch. | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/l8_pic_765e3e61-30bb-4b74-9c20-08b04de19ac5_medium.jpg?v=1719999207)
L8 | Liquid level switch. | Dwyer
Brand: Dwyer
SKU: L8
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![Hayward HLS222E000 HLS Series Adv. Level Sensor, CPVC, 0-33', EPDM, 10-35 VDC, 4-20 MA | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/HLST200_Indicating_Level_Transmitter_Hero_ecom_b13b_805f1586-f7cb-4ace-b493-f622a177956e_medium.png?v=1719989949)
HLS222E000 | HLS Series Adv. Level Sensor, CPVC, 0-33', EPDM, 10-35 VDC, 4-20 MA | Hayward
Brand: Hayward
SKU: HLS222E000
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![Hayward HLS222F000 HLS Series Adv. Level Sensor, CPVC, 0-33', FPM, 10-35 VDC, 4-20 MA | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/HLST200_Indicating_Level_Transmitter_Hero_ecom_b13b_medium.png?v=1719989840)
HLS222F000 | HLS Series Adv. Level Sensor, CPVC, 0-33', FPM, 10-35 VDC, 4-20 MA | Hayward
Brand: Hayward
SKU: HLS222F000
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![Hayward HLS211E000 HLS Series Adv. Level Sensor, CPVC, 0-15', EPDM, 10-35 VDC, 4-20 MA | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/HLST200_Indicating_Level_Transmitter_Hero_ecom_b13b_a5a4c974-840d-421c-8817-644d95c17e4f_medium.png?v=1719989821)
HLS211E000 | HLS Series Adv. Level Sensor, CPVC, 0-15', EPDM, 10-35 VDC, 4-20 MA | Hayward
Brand: Hayward
SKU: HLS211E000
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