Wireless crane remote control | 2 buttons + START/STOP + mushroom STOP | 1 speed | 868 MHz | 24–440 V AC/DC | IP65 | ES-F21-2S+

ES-F21-2S+ wireless 2-button crane remote with mushroom STOP – 868 MHz, 24–440 V AC/DC

ES-F21-2S+ is a radio control set (transmitter + receiver) for hoists and cranes that need lifting and lowering. When a button is pressed, the transmitter sends the command over 868 MHz, a receiver relay energises the corresponding contactor coil, and the contactor switches the motor.

• 2 direction buttons – lifting and lowering
• START and STOP – switch the main contactor KM0 on and off
• Twist-release mushroom STOP – separate emergency stop on top of the transmitter, easy to press with gloves
• 868 MHz radio – EU SRD band for short-range control
• 24–440 V AC/DC receiver – version to match the contactor coil voltage
• Up to ~150 m – the operator picks a safe position in open space
• IP65 receiver – suitable for dusty and damp locations

• ES-F21-2SE – no twist-release mushroom STOP on the transmitter, receiver 12–440 V AC/DC, IP65
• ES-F21-4S+ – 4 direction buttons, also with mushroom STOP on the transmitter, up to ~250 m
• ES-ML-K2 – 2 direction buttons, receiver 230 V AC, IP66

• Electric chain and wire rope hoists
• Winches and lifting gear with one motion
• Goods lifts in warehouses and workshops
• Replacing a 2-button pendant with a radio remote
• Lifting equipment in warehouses and production halls

• Receiver relays switch contactor coils only – do not connect the motor directly to the receiver.
• The receiver supply version (within 24–440 V AC/DC) must match the control circuit voltage.
• The STOP / MAIN output drops out the main contactor KM0; on loss of radio link the crane must stop (EN 60204-32) – verify at commissioning.
• 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 the main isolator and lock it out (LOTO).
• The mushroom STOP is released by twisting – find the cause of the stop first, only then reset it and press START.

Quick selection guide

Check before ordering:

• When ordering, state the contactor coil voltage – the receiver version is chosen within 24–440 V AC/DC.
• 868 MHz is an EU SRD band; if the remote will be used outside the EU, check that the frequency is permitted in your country.
• Count the motions you need: 2 buttons = 1 motion, 1 speed; for more directions or 2 speeds choose another model from the group.

ES-F21-2S+: 2 buttons + mushroom STOP, 868 MHz

ES-F21-2S+ is a 1-speed radio remote for lifting and lowering with a 24–440 V AC/DC receiver and a range of up to ~150 m in open space. The twist-release mushroom STOP on the transmitter is a separate emergency stop control.