8(3) The battery installation method is shown in the figure below (battery with "+" facing outward).Note: To install the battery, use a screwdriver or similar tool to assist in opening the battery cover.7. Important Maintenance InstructionYour device is a product of superior design and craftsmanship and should be used with care. Thefollowing suggestions will help you use the warranty service effectively.• Keep the equipment dry. Rain, moisture, and various liquids or moisture may contain mineralsthat can corrode electronic circuits. In case the device is wet, please dry it completely.• Do not use or store in dusty or dirty areas. This can damage its detachable parts and electroniccomponents.• Do not store in excessive heat. High temperatures can shorten the life of electronic devices,destroy batteries, and deform or melt some plastic parts.• Do not store in excessive cold place. Otherwise, when the temperature rises to normaltemperature,moisture will form inside, which will destroy the board.• Do not throw, knock or shake the device. Rough handling of equipment can destroy internalcircuit boards and delicate structures.• Do not wash with strong chemicals, detergents or strong detergents.• Do not apply with paint. Smudges can block debris in detachable parts and affect normaloperation.• Do not throw the battery into a fire to prevent the battery from exploding. Damaged batteriesmay also explode.All of the above suggestions apply equally to your device, battery and accessories. If any device isnot working properly.Please take it to the nearest authorized service facility for repair.8. FCC StatementThe OEM integrator has to be aware of not to providing information to end users regarding how to install or remove this RF module in the user manual of the endproduct.The user manual which is provided by OEM integrators for end users mustInclude the following information in a prominent location.“ To comply with FCC RF exposure compliance requirement, the antenna user for this transmitter must be installed to provide a separation distance of at least 20cm fromall persons and must not be co-located or operating in conjunction with any other antenna or transmitter .”Label for the end product must include “Contains FCC ID :NRH-ZB-Z100B”or “A RF transmitter inside,FCC ID :NRH-ZB-Z100B”.You are cautioned that changes or modifications not expressly approved by the party responsible for compliance could void your authority to operate the equipment.This device complies with Part 15 of the FCC Rules. Operation is to the following two conditions:(1)this device may not cause harmful interference and (2)this device mustaccept any interference received, including interference that may cause undesired operation.FCC RF Radiation Exposure Statement:1This Transmitter must not be co-located or operating in conjunction with any other antenna or transmitter.2.This equipment complies with FCC RF radiation exposure limits set forth for an uncontrolled environment. This equipment should be installed and operated with aminimum distance of 20 centimeters between the radiator and your body.