This lightweight handset has 4 large push-buttons (single or dual step), plus Start and Stop. The buttons have a long stroke and positions that can be felt easily even when wearing heavyweight work gloves. A push-button or toggle switch (optional) is fitted to the side.
The LK4 has a removable activation key and fast frequency changeover. The housing is shockproof and resistant to acids, oils and the effects of the weather. The hard protective cover, which is made from nylon-glass fibre, has an IP65 protection rating.
|Power supply||2,4V - 1,6 Ah (NiMH battery)|
|Frequency band||433-434 MHz (32 channels) or
869,7-870 MHz (12 channels) or
902-928 MHz (32 channels)
|Typical working range||100 m|
|Average usage time with fully charged battery (continuous use at 20°C / 68°F)||about 12 hours|
|Safety performance of the STOP function (EN ISO 13849-1)||PL d / cat.3|
|Safety category for the protection against unintended movements from standstill UMFS (EN ISO 13849-1)||PL c / cat.2|
|Protection degree||IP 65|
|Operating and storage temperature||operating (-20°C) ÷ (+55°C) (-4°F) ÷ (+131°F)
storage: (-40°C) ÷ (+70°C), (-40°F) ÷ (+158°F)