Housed in stainless steel box and  manufactured to a high standard, this Auto Dial Telephones offers increased resistance to vandalism, and ensure that the primary function of communications is maintained at all times. Extremely easy to install. The cable entrance is on the back of the phone to prevent from artificial damage, while the keypad is weather and vandal resistant. Unit size: 240*100*106 (mm)    DBS diode series patch rectifier bridge stack is composed of 4 rectifier diodes connected and packaged in the form of a bridge full-wave rectifier circuit, which belongs to a full bridge. There are four lead-out pins, the connection point of the negative poles of the two diodes is the "positive pole" of the DC output terminal of the full bridge, and the connection point of the positive poles of the other two diodes is the "negative pole" of the DC output terminal of the full bridge. Reverse repetitive peak voltage range: 50V~1000V, average rectified output current 0.8A~1.5A: forward non-repetitive surge current 30A (60Hz sine wave, one cycle, Tj=25°C). For specific parameters, please refer to the specification or consult online customer service. DB-S diode,DBS Bridge Rectifiers,DBS SMD Bridge Rectifier Diode,Bridge Rectifier Diode DBS Changzhou Changyuan Electronic Co., Ltd. , https://www.changyuanelectronic.com
Main Features of the Vandal Resistant Hotline Telephone, Security Room Ringdown Emergency Telephone
- Standard Analogue/ SIP/ GSM/ 3G Phone
- Wall mounting, simple intallation
- Handset operation, Stainless steel armoured handset cord
- Weather proof protection IP54-IP65
- Inductive coupler fitted as standard for hard of hearing
- Tamper resistant fixings
- Fast-fit terminal connection
- Gray color and optional for Yellow, Red, Blue
- Can be programmed remotely by tone phone or locally via keypad
- Non-volatile memory
- Telephone line powered (Analog)
- External power supply or PoE (SIP)
- RJ45 Port for SIP connection
- Weatherproof and corrosion resisitant handset
- CE, FCC, RoHS, ISO9001 Compliant
 Applications of the Vandal Resistant Hotline Telephone, Security Room Ringdown Emergency Telephone
Ideal for Railway applications, Marine applications, Tunnels. Underground Mining, Firefighter, Industrial, Prisons, Jail, Parking lots, Hospitals, Guard Stations, Police stations, Bank halls, ATM machines, Stadiums, inside and outside building etc. 
Technical parameters of the Vandal Resistant Hotline Telephone, Security Room Ringdown Emergency Telephone
Ambient conditions
Protection type
IP 66 as per EN60529
Operating temperature
-40°C to +70°C
Storage temperature
-45°C to +85°C
SIP Version
Power Supply
PoE or 12V DC
Power Consumption
-Idle:1.5W
-Active:1.8W
SIP Protocol
SIP 2.0 (RFC3261)
Support Codec
G.711 A/U, G.722 8000/16000, G.723, G.729
Communication Type
Full duplex
Ringer volume
- 90~95dB(A) Â at a distance of 1 m
- 110dB(A) at a distance of 1 m (for external horn speaker)
Analogue Version
Power Supply
From the analogue telephone network
Supply Voltage       Â
24 VDC to 65 VDC
Supply Current
20 mAÂ DC to 100 mAÂ DC
Ringer Volume
- 80dB(A) Â at a distance of 1 m
- 110dB(A) at a distance of 1 m (for external horn speaker)
Dialing Method
DTMFÂ mode in accordance with ITU-T recommendation Q.23.
CERTIFICATIONS
PACKAGE of the Vandal Resistant Hotline Telephone, Security Room Ringdown Emergency Telephone
Carton size: 340 *240 *160 (mm)
Packaging materials: pearl cotton, carton
Net weight: 1.6 KG
Gross weight: 2.2 KGÂ 
Vandal Resistant Hotline Telephone, Security Room Ringdown Emergency Telephone
Model NO.: JR202-CB
Speed Dial: Yes
Vandalproof: Yes
Certification: Ce, FCC, RoHS, ISO9001
Weight: 3 Kg
Trademark: J&R
Transport Package: Pearl Cotton, Carton
Specification: 240 *100 *106 (mm)
Origin: Shenzhen, China
HS Code: 8517180090
Vandal Resistant Hotline Telephone, Security Room Ringdown Emergency Telephone