Wireless crane remote control | 4 buttons + START/STOP | 1 speed | 868 MHz | 230 V AC | IP66 | ES-ML-K4

Wireless crane remote ES-ML-K4 – 4 buttons, START/STOP, 868 MHz, 230 V AC receiver

ES-ML-K4 is a compact single-speed radio remote with 4 direction buttons (up / down / east / west), START and STOP. The transmitter sends the command over 868 MHz to the receiver, whose relays switch the contactor coils – the motor is always switched by a contactor. Suitable for hoists, crane beams, winches and lifts.

• 4 direction buttons – up / down / east / west, single speed
• START – the system is enabled only by a deliberate action
• STOP – de-energises the main contactor
• 868 MHz radio – EU SRD band, 150 m, up to ~250 m in open space
• 230 V AC receiver – connects to a control circuit of the same voltage
• IP66 – protection against dust and powerful water jets
• −40…+85 °C – for unheated halls and outdoor work

• ES-ML-K2 – 2 buttons, same 230 V AC and IP66 – when only hoisting is needed
• ES-ML-K6 – 6 buttons, IP68 – for a third motion
• ES-F21-4SE – 4 buttons, 12–440 V AC/DC receiver, IP65 – when the control circuit is not 230 V AC
• ES-LD-BC4 – 4 buttons, modular receiver without housing – for fitting into an existing panel

• Electric hoists and crane beams
• Single-speed overhead and gantry cranes
• Electric winches
• Lifts and lifting platforms
• Workshops, production halls and warehouses
• Lifting equipment on construction sites

• The receiver relays switch contactor coils only – motor current must never flow through them.
• The receiver supply voltage must match the control circuit and contactor coil voltage.
• The STOP / MAIN relay de-energises the main contactor KM0; during commissioning check that the crane stops when the transmitter is switched off or the link is lost (EN 60204-32).
• Limit switches (SQ) and NC interlocking of opposite directions stay in the circuit – the radio remote does not replace them.
• Before installation or repair, switch off and lock the main isolator (LOTO).

Quick selection guide

Check before ordering:

• When ordering, state the control circuit voltage and check it on the receiver label on delivery – the receiver and contactor coils must have the same voltage.
• 868 MHz is an EU SRD band; if used outside the EU, check that the frequency is permitted there.
• 4 buttons control two motions (e.g. hoisting and travel) – for a third axis choose a 6-button remote.

Who is ES-ML-K4 for?

ES-ML-K4 is a 4-button single-speed radio remote with an 868 MHz link and a 230 V AC receiver. Choose it when an existing contactor circuit needs simple wireless control instead of a pendant.