♦ Intrinsically Safe Structure Engineered to meet FM standards the JHS-430 is intrinsically safe and is approved for use when transporting, loading or unloading flammable, dangerous materials. The advanced, structurally sound casing and design ensure its safe use in conditions where intrinsically safe communication is necessary. ♦ Waterproof Design The JHS-430's one piece, sealed casing and waterproof design made to comply with industry specifications (JIS class 7) ensure its use even in rainy or severe splash conditions. ♦ Tone Squelch Function (option) The JHS-430 features 2 tone squelch frequencies that can be pre-set. ♦ Easy Operation The ergonomic design of the unit and placement of the control knob and keys allow single handed operation and a wide screen viewer for channel identification. ♦ Low Power Consumption The Lithium-Ion battery provides minimal power consumption with long lasting operation. The sleep mode function ensures more than 10 hours of use between charging.