Industrial Crane Radio Remote Control Wireless Transmitter with Emergency Stop Button - 2 Key Switch F21-2S (2 Transmitters + 1 Receiver) 65V-440V AC/DC - Perfect for Overhead Cranes, Hoists & Material Handling Equipment

1. Technical specification Basic information: Control distance: Up to 100m Control point: 2 Material: Glass-Fiber PA Operation frequency: 310.0325-331.165 MHz Certificates: CE, FCC, ISO9001:2008 Unique code: Over 4.3billon unique ID codes Working temperature: -40°C-+85°C Output capacity: Full sealed relay output with 8 amperes Transmitter specifications Dimensions: 132*45*28mm Weight: 98g Material: glass-fiber PA Protection degree: IP65 Power supply: DC 3V (2AA Batteries) Receiver specifications Power supply: AC/DC36V-380V Dimensions: Size:88*92*62mm Weight: 290g Material: glass-fiber PA Protection degree: IP65 2.Standard configuration: 1. One transmitter ; 2. One dust bag; 3. One receiver; 4. One 1m cable connect with receiver; 5. One receive antenna; 6. One operation and maintain manual. 3. Products Application: Widely applied for lifting equipment, construction machinery, cargo loading/unloading machines, water supply system, data transmission, the iron-smelting and steel-making, the automobile manufacturing, paper-making and chemical industry, steel structure processing, galvanization, shipbuilding, railroad, bridge, tunnel construction and other equipment and sites which can be worked by radio controls. 5. Notes: The LED on the front of the transmitter indicates the condition of the batteries. It will flash green during operation if the battery power is sufficient, and will flash red if the battery power is low. If the LED is flashing red, or if the operation becomes erratic, or will only work from a short distance, replace both batteries with new AA alkaline batteries.