Trimod’Besta A 01 04 is a standard side‑mounted float level switch by Bachofen AG (Switzerland). Designed with a tri‑modular system, it handles PN25 (25 bar) pressure and 0–300°C temperature. Wetted parts: CrNiMo stainless steel; housing: seawater‑resistant aluminum. Features SPDT silver microswitch (5A/250VAC), IP65, SIL1, and marine approvals (ABS, DNV‑GL). Ideal for high/low level alarms in shipbuilding, chemical, oil & gas.