Application Equipment and Machinery:
 * Single hook, single-speed electric hoist or double-speed hoist crane.
 * Environmental garbage trucks, aerial lifts, variable-speed motors, electric doors

Detailed Introduction

Name: F21-2D
Category: Remote Controller (Handheld) 
Specifications: Dimensions: 13.0*4.5*2.2 cm 
Weight: Approximately 120 grams (including battery) 
Series: F21 Ultra-Compact Series 
Introduction: 　 
Detailed Description: Product Performance Indicators 
* 2 dual-speed buttons, 1 start button
* Water and dust resistance rating up to IP65 
* Durable glass fiber shell structure 
* Ultra-wide operating temperature range from -35℃ to +80℃
* Internal functions can be configured via computer interface 
* Incorporates Hamming code, self-detection, and non-repeating 32-bit identification code 
* Operating distance varies by model, up to 50-100 meters 
* Low power consumption design