Colourful Mini Aluminium Alloy Outdoor Survival Whistle_ Lady Safety Keychain

Material: Aluminum

Size: 4.6 * 0.9cm

Colour: Random (pm for any specific colour)

 

General Guide:
- Short tone (one second); ■■■ long tone (more than 3 seconds).
- Within the same (individual) instruction, interval for whistle sound gaps 2 to 3 seconds; the interval for new command should gap 30 seconds or more (e.g. repeatedly sending same commands need at least 30 seconds)

Communication (T): ■■■ (one long tone) voice communications for a team, it is used to determine the location of each other, and as an indication of receiving instruction

Gather (U): ●● ■■■ (two short one long) Gather (to direction of whistle sound)

Forward (V): ● ■■■ (one short one long) Accelerate and go forward

Front team to Wait (W): ● ■■■ ■■■ (one short two long) the distance between teams is too far, require the team at the front wait for other team

Request support (S): ●● ● (three short) when facing difficulties to seek help. Signal receiver replies with communication tone (T) which indicate coming to support

SOS (SOS): ●● ● ■■■ ■■■ ■■■ ● ● ● (three short three long three short) which is the international SOS code