Dust-Proof and Noise-Reducing Intercom System of Construction Hoist

Dust-Proof and Noise-Reducing Intercom System of Construction Hoist. OSHA Recommended Safety: Industry standard for construction hoists, recommended by OSHA for emergency communication. Three Frequency Options: Available in 250KHz, 741KHz, or 800KHz to suit different site requirements. No Radio Frequency License: Uses protection loop line transmission, eliminating need for RF application or electromagnetic pollution. Emergency Alarm Function: Built-in alarm button allows workers to contact operators immediately during medical emergencies. Safe 24V DC Operation: Powered by safe 24 volts DC with backup battery supply for continuous operation. Weather Resistant Design: Heavy duty composite Nylon Plastic enclosure operates reliably in extreme weather conditions. Volume Control & Mute: Electronic volume control and mute function prevent feedback and limit broadcast interference. Customization Available: Customization from samples and designs available for frequency and quantity based on floors.