"Interruptor de presión de aire 120-150 PSI montaje en tanque 1/4" NPT 12V 24V DC para bocinas de aire"
Air Horns and Train Horns. Here’s what makes it a must-have Size: 1/4-18 NPT Male Thread. Working Condition: Compatible with AC 110V / 120V / 240V or DC 12V / 24V (Maximum Current Supported: 20Amp).