! 2 Experience Factory Pedal Siren Hand Operated Sirens Lk-120

• Customization: Available
• Type: Industry Alarm
• Signal Transmission: Wireless Alarm
• Model NO.: LK-120
• Certification: DOT, E-MARK, CE, ISO, FCC, RoHS, CCC, GS
• Application: Indoor, Outdoor
• Working Principle: Electromechanical
• Transmission Mode: Wireless
• Alarm Volume (within 1m): ≥110dB
• Receive Frequency: 433.92MHz
• Transport Package: Standard Export Packing
• Specification: 500-2
• Trademark: SHUNTONG
• Origin: Zhejiang, China
• Production Capacity: 20000PCS/Month

Product Description

Product name	Hand crank alarm
Product model	LK-120
Acoustic audio	600±20Hz (depending on hand cranking speed)
Audio frequency	600 ± 20 Hz (depending on hand-crank speed)
Sound level	1252dB(A)@1m

Application areas:An ideal alarm equipment used by civil defense,detention centers, prisons, mines, airports, pastures,oil depots, warehouses, hotels, hotels and other enterprises inthe event of a critical situation.

Alarm principle:The hand-cranked siren is manually rotated bythe crank handle, accelerated step by step through thetransmission of the gear box, and then driven by the transmissionblock to drive the ringing wheel to run at high speed. During thehigh-speed operation of the whistling wheel, the absorbed airproduces high-speed and high-pressure squeezing out to the fixedwindow of the fixed wheel at the same time, thereby playing therole of alarm.