220VAC HS-4 Crane Remote Control Button Switch System Specifications:Operating frequency: 433MHzTransmission distance: ≤100MTransmitter operating voltage:2pcs AAABattery Receiver operating voltage: 12-24 V AC、 AC36V、 AV220V、 AC380VOutput interface: relay 12V、 5APoint of acceptance: non directionalWorking temperature: -20 -85\u2103Protection level: IP65Size:13x9.6x5cmCommon trouble shooting:1 when the transmitter button is pressed、 if the indicator light is not bright、 the batteryis not properly installed、 please remove the battery according to the positive and negativepolarity indicator to re load.2 press the transmitter button、 if the emitter lights flashing red、 please check whether themagnet is installed correctly、 the emergency stop switch is in release state、 and confirmwhether the "start" button has been pressed.3 when the receiver does not move、 Please take out the transmitter battery.After 15s tore load power supply4 when the emitter green indicator light appears weak、 or the emission distance becomesshorter、 or intermittent work、 it may be battery power is insufficient、 please change the batteryPackage included:1x Launcher1x Receiver4x Insurance pipes