The JREX106 series telephones are designed for safe, reliable communication in hazardous areas, offering robust construction and a range of features suitable for critical mission communications and high safety applications. The housing is made of impact and shock-resistant GRP (Glass fibre-reinforced polyester), which is also resistant to acids, alkali, and lubricants.
Function Description:
The JREX106 series telephones provide basic telephone functions and can be connected to any standard two-wire telephone line, including analogue PABX lines and PSTN. They are available in two main versions: FK (full keypad) and CB (hotline). The CB version is not equipped with a keypad, limiting access to some features. These telephones are designed for operation in various hazardous industrial environments, including petrochemical, oil exploration, oil & gas plants, coal, military, chemical, power generation facilities, wastewater treatment facilities, and grain storage sites.
The explosion-proof phone / CB (auto dial) connects to the PABX upon lifting the handset. It can also receive calls due to its built-in ringing circuit. Auto-dial numbers can be pre-programmed via the built-in keypad or through phone calls. Interfaces are available for optional accessories such as a second earpiece, secondary ringer, and external loudspeaker. The "external loudspeaker" operating mode is set by bridging terminals, which also outputs the ringer sound via the external loudspeaker, reducing the volume of the internal ringer.
Important Technical Specifications:
- Connection Data:
- Supply voltage: 24 VDC to 65 VDC
- Supply current: 20 mA DC to 100 mA DC
- Admissible frequency range: 16...54Hz
- Maximum input short circuit current IK: 50A
- Ringer voltage: 48 VAC to 90 VAC (calling frequency 21...54 Hz)
- Ringer impedance: Greater than 6.0 kΩ at 25 Hz and 48...90 VAC; Greater than 4.0 kΩ at 50 Hz and 48...90 VAC.
- Ringing volume: Max. 80 dB(A) in 1m distance; Approx. 110dB(A) at 1m (for external horn speaker)
- Flash function: Adjustable from 50 ms to 450 ms
- Dialing method: PD or DTMF mode (set via menu, DTMF in accordance with ITU-T Q.23)
- Connection terminals: Up to 4 mm² inflexible; Up to 2.5 mm² flexible
- Housing:
- Material: High Impact Glass fibre-reinforced polyester
- Dimensions: Approx. 204mm x 334 mm x 126 mm
- Weight: Approx. 8kgs
- Keyboard: Stainless steel keyboard with 20 keys (FK version)
- Position of operation: Mounted upright on the wall, on a plane surface only.
- Protection Class I: M20 x 1.5 threaded hole or threaded 1/2" NPT adapter for cable entry assembly.
- Protection Class II: Plastic cable entry for cable diameters: Ø 6 to 13 mm
- Handset:
- Sling protection: Integrated
- Handset cord: Steel-reinforced steel-clad cord (optional black curly cord)
- Receiver inset: Dynamic receiver inset with magnetic field generator
- Microphone capsule: Electret microphone
- Ambient Conditions:
- Operating temperature: -40°C to +70°C
- Storage temperature: -40°C to +85°C
- Relative humidity: 10%~95%
- Additional Features:
- Hook switch: Dry reed contact without a mechanical cradle
- LCD Display: 182 x 64 pixel / Field of view ca. 78 mm x 26 mm
- Power supply: From analogue telephone network, no additional mains supply required
- Conformity:
- Degree of protection of enclosure: IP 67 as per EN60529
- Degree of protection against external mechanical impacts: IK10 as per IEC62262
- Marking: II 2 G Ex e [ib] mb IIC T6 Gb, II 2 D Ex tb [ib] IIIC T85°C Db
- IECEx Certificate of Conformity: Ex e [ib] mb IIC T6 Gb / Ex tb [ib] IIIC T85°C Db
- Telephone (user menu): Chinese, English
- Explosion Protection:
- II 2G Ex e [ib] mb IIC T6 Gb
- II 2D Ex tb [ib] IIIC T85°C Db
- -40°C ≤ Ta ≤ +70°C
Usage Features:
- Autodial, Memory, Mute, and Menu Configuration: Keys for quick access to these functions.
- Programmable Auto Hang-up Timer: Allows setting a time limit for calls.
- Hearing-aid Compatible (HAC) Receiver: Handset fitted with a stray-field coil for connecting hearing aids.
- Optional Hotline (without keypad) Version: The CB version offers direct connection to a pre-programmed number upon lifting the handset.
- Tamper Resistant Fixings: Ensures security and prevents unauthorized access.
- Magnetic Reed Hook Switch: No visible parts, enhancing durability and resistance to environmental factors.
- Fast-fit Terminal Connection: Simplifies installation.
- Various Mounting Options: Designed for simple installation, typically mounted upright on a wall or mounting plate.
- Non-volatile Memory: Retains settings even after power loss.
- LCD Display: Shows call numbers, menu settings, and pictograms for functions.
- Speed Buttons (M1, M2, M3): Quickly connect to stored help phone numbers.
- Hands-free: Allows talking without holding the handset.
- Mute: Mutes the microphone during a call.
- Consultation Hold Key: For holding calls.
- Last Number Redial (LR): Redials the last entered number.
- Volume Control: Adjustable handset and loudspeaker volume.
- Handset Mode: Default mode when handset is picked up. Volume can be adjusted.
- Hands-free Mode: Activated by keeping the volume key depressed and replacing the handset. Loudspeaker volume can be adjusted.
- Headset Mode: When a headset is connected, it takes the place of hands-free talking. Handset assumes higher priority if lifted during headset mode.
- Programming: Can be programmed remotely by tone phone or locally via keypad (except for CB version). Factory default password is 9999.
- Store Speed Dial Number: Up to 14 digits can be stored on buttons 0-9, M1, M2, M3.
- Delete Speed Dial Number: Remove stored numbers.
- Hold Time for Speed Dial: Adjustable from 1-9 seconds (default 3 seconds).
- Store/Delete Auto Dial Number (CB version only): For the hotline function.
- Talk Time Limit: Set from 0-255 minutes (0 = no limit).
- Change Flash Time: Adjustable from 1-9 levels (1=50ms to 9=450ms, default 5=250ms).
- Auto Answer: Enable auto answer after 1-9 ringings (default 0=disable). This function is for connecting an external horn speaker.
- Voice Control: Button to control voice.
- Switch between Speakerphone and Handset Mode: Button to toggle modes.
- Mute Mic: M button to mute the microphone.
- Flash: R key to transfer to a third-party call.
- Redial: LR key to redial the last entered number.
- Heartbeat for Telephone Management: Store a service number to receive "heartbeat calls" from the telephone. Set call cycle (0-9 days, default 0=disable) and call time (10-60 seconds, default 20 seconds).
Maintenance Features:
- Maintenance-free: The telephone is designed to be maintenance-free.
- Cleaning: If the operating area is highly contaminated, the telephone should be cleaned with a damp cloth to avoid electrostatic charging. Sharp objects should not be used for cleaning.
- Seals Check: During maintenance, accessible seals should be checked for function, damage, or positioning. Damaged seals must be replaced, and operating the telephone with damaged seals is not allowed.
- Repairs: Only permissible with original spare parts and must be carried out by a specialist. Other replacement parts can cause damage and invalidate the guarantee.
- Disassembly: The complete telephone should be disposed of as electronic waste. Plastics, metals, and electronics components are to be disposed of separately, adhering to national requirements and regulations.
- Warning and Security Instructions:
- Do not connect or operate with voltages other than specified.
- Ensure PE wiring is connected properly for Protection Class I models.
- Operate only under specified ambient conditions.
- Ensure the telephone and connection wire are not damaged.
- Heed legal, commercial, industrial, accident-prevention, and electrical regulations.
- Telephone must be switched off for at least 2 minutes before opening.
- Prevent dust ingress when open.
- Do not damage cover seals or collars during mounting/demounting.
- Repaired apparatus for use in dust must undergo a routine test.
- Cleaning the mouthpiece horn with pressurized air is prohibited due to potential dangerous charging.
- High concentration of sulphurous gases may cause lettering to fade and rust film to arise.
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