1. Do not replace batteries and other accessories in hazardous environment. Contact sparks produced during disassembly and assembly can cause explosion or fire. Even if the product has been certified by the explosion-proof inspection institution, it is not possible to expose the attachment connector in the dangerous atmosphere. You should use a dust cover to close the shield without using the attachment connector.

2, explosion-proof walkie talkie use two years later, should be returned to the factory to detect again to determine the explosion-proof level, so as to avoid the long-term use of reduced explosion-proof grade and accidents.

3. Don't disassemble the products which have been certified by the explosion-proof inspection institution in any way. Refitting intercom opportunity to change the original design structure of interphone hardware. Only the original manufacturer of the product can be refitted in the production site which has been certified by the explosion-proof inspection institution. Unauthorized modification will result in the failure of the explosion proof certification of the product.

4, the whole machine charging, the power switch should be closed, not in charge of the same time when the call operation, so as not to burn components or battery accidents.

5, the battery can not be "+" - "-" two pole short-circuit connection.

6, in use, do not use hand to get the antenna, not bending the antenna.

The explosion proof sign is printed on the interphone, indicating that the interphone has passed the explosion proof authentication. The nameplate of explosion proof mark marks the dangerous environment grade that the interphone can use, the Motorola battery parts number, user manual number and temperature code which must be used together. Explosion proof model. The explosion-proof model passed the explosion protection certification of FM. The explosion protection grades are IS/I Safe Class I, II, III Div1, Grp CDEFG and NI Class I Div 2, Grp A, B

The temperature code of C and D is T3C. Among them, IS is intrinsically safe and NI is N. Explosion proof interphone must use explosion proof battery. Only in strict accordance with the provisions of the scope of use, to ensure safety. Ex mark must be in the product from the factory before shipment after testing the attached, absolutely prohibited in other places "upgrade" for the explosion-proof products and stick with explosion-proof mark.