Wireless emergency stop 

4 function buttons + start/stop
Light-weight, compact and ergonomic transmitters
IP65 tightness, protective foams
Integrated rechargeable battery
Transmitter support charger
Wireless emergency stop with safety PL e EN13849 and SIL 3 EN61508
6 static outputs + 2 safety relays
64 frequencies in 433MHz
Infrared start-up option