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Specification: 56*15mm

Thickness: 8mm

Weight: 11g

Lifebuoy Whistle Instructions

Symbol explanation: ● Short sound (within one second); ■■■ Long sound (over 3 seconds); The interval between the whistle sounds is 23 seconds, and the interval between instructions is over 30 seconds (e.g., to repeat the instruction, you need to wait over 30 seconds) Communication (T): ■■■ (one long sound) for team voice communication to determine the direction of the whistle sound, to send a sound to represent receiving the instruction (similar to shouting "Hey") Gathering (U): ●●■■■ (two short sounds followed by one long sound) to gather towards the direction of the whistle sound (similar to shouting "Gather") Advance (V): ●■■■ (one short sound followed by one long sound) Rest time to send out to represent the entire team's departure, and to send out during movement to represent accelerating forward (similar to shouting "Charge") Front team waiting (W): ●■■■■■■■ (one short sound followed by two long sounds) Used when the team has traveled too far, requiring the front team to wait for the rear team (similar to shouting "Please wait") Requests for support (S): ●●●● (three short) When encountering difficulties and needing help, send out this signal. The receiver responds with a communication tone (T) to indicate that they will go to assist (similar to shouting "urgent! urgent! urgent!"). SOS: ●●●●●■■■■■■■■■■■■■■■■●●●●● (three short, three long, three short) This is the international SOS code, please memorize it.

Search and Rescue Whistle Usage

Three short beeps: Indicates an emergency evacuation.

Stop work: Indicates to stop the operation, all team members to maintain silence.

A long and a short: Indicates to continue the work.

High-frequency dual-chamber whistle is a great helper for outdoor products, compact and convenient to carry. The design without beads in the chamber allows it to be used even when wet. If you need a specific color, please contact the customer service or leave a message. If you do not specify the color when ordering, we will send you a random color.