Specifications

Certification
SAFETY NOTES
• HT54x radios must always be used within the terms of their certification.
• Keep the radios away from aggressive substances. If used in a hostile environment, extra
protection may be needed.
• To prevent ignition of hazardous atmospheres, batteries must only be charged in an area
known to be non-hazardous.
• Use of battery chargers other than the Entel charger supplied will invalidate the explosion
protection certification.
• No unauthorised repairs are permitted.
• Radios fitted with a CNB550E battery pack must not be used outside of the ambient
temperature range Tamb = -20ºC to +28ºC
• Radios fitted with a CNB550E battery pack must not be used outside of the ambient
temperature range indicated on the battery pack label.
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Certification
Ex ib IIA T4