The JWBT821 Explosion-proof VoIP telephone is designed for Emergency communication in the hazardous area. The telephone can afford the large temperature differences, high humidity, sea water and dust, corrosive atmosphere, explosive gases & particles, as well as mechanical wear and tear, making perfect performance as for IP68 defend grade,even with the door open. The body of the telephone is made of Aluminum alloy, a very strong die-casting material, with zinc alloy full keypad features 15 buttons (0-9,*,#, Redial,SOS,PTT,Volume control) . Equipped with horn and beacon, the horn can broadcast remotely for notification, horn works after 3 rings (adjustable), shut when handset picked up .The LED Red（color adjustable） beacon begins to flash when ringing or in use, attracting attention to the phone when call comes, it could be very useful and obvious in the noisy environments. Several versions are available, color customized，with stainless steel armored cord or spiral, with or without door, with keypad, without keypad and on request with additional function buttons. Telephone parts is produced by self-made ,every parts like keypad, cradle, handset could be customized.This Explosionproof Telephone is suitable for use in harsh environment: 1. Suitable for explosive gas atmospheres Zone 1 and Zone 2. 2. Suitable for IIA, IIB,IIC explosive atmosphere. 3. Suitable for dust Zone 20, Zone 21 and Zone 22. 4. Suitable for temperature class T1 ~ T6. 5. Suitable for in hazardous areas with dust and flammable gases in mines and non-mines. Oil & gas atmospheres, petrochemical industry,Tunnel, metro, railway, LRT, speedway, marine, ship,offshore, power plant, bridge etc.

Item	Technical data
Explosion-proof mark	ExdibIICT6Gb/EXtDA21IP66T80℃
Voltage	AC 100-230 VDC/POE
Standby Work Current	≤0.2A
Frequency Response	250～3000 Hz
Amplified Output Power	10～25W
Ringer Volume	110dB(A) at 1m distance
Corrosion Grade	WF1
Ambient Temperature	-40～+60℃
Atmospheric Pressure	80～110KPa
Relative Humidity	≤95%
Lead Hole	3-G3/4”
Installation	Wall-mounted

1. Support 2 lines SIP, SIP 2.0 (RFC3261). 2. Audio Codes:G.711, G.722, G.729. 3.IP Protocols:IPv4, TCP, UDP, TFTP, RTP, RTCP, DHCP, SIP. 4.Echo cancellation code:G.167/G.168. 5.Supports full duplex. 6.WAN/LAN: support Bridge mode. 7.Support DHCP get IP on WAN port. 8.Support PPPoE for xDSL. 9.Support DHCP get IP on WAN port. 10.Aluminum alloy die-casting shell, high mechanical strength and strong impact resistance. 11.Heavy Duty handset with Hearing Aid Compatible (HAC) receiver, Noise canceling microphone. 12.Zinc alloy keypad and Magnetic reed hook-switch. 13.Weather proof protection to IP68. 14.Temperature range from -40 degree to +70 degree. 15.Powder coated in UV stabilized polyester finish. 16.With 25-30W loudspeaker and 5W flash light. 17.Wall mounted, Simple installation. 18.Multiple housings and colors. 19.Self-made telephone spare part available.If you have any color request, let us know the Pantone color No.85% spare parts are produced by our own factory and with matched test machines, we could confirm the function and standard directly.