HD4

• 30 second ‘mute’ feature.
• Detachable black snag ears.
• 4 volume settings + silent setting.
• 4 tone settings.
• 4 levels of sensitivity.
• Drop back differentiation.
• 15 second latching LED.
• Changeable LED colour: red, yellow, green, blue.
• Night light mode.
• 5mm power out socket.
• Low battery warning on both the alarms and receiver.
• Range up to 150m in clear areas.
• Vibration function on receiver.
• Stainless steel screw thread.
• Compact design.
• High impact ABS moulded construction.
• Table top stand and lanyard for receiver included.
• Clip on hardcase alarm cover included.
• 9V battery for alarms (not supplied).
• 3 x AAA, 1.5V batteries for receiver (not supplied).