ZYCOO-4GSM-U50-U100 4 GSM trunk module for SMS/Voice

ZYCOO-4GSM-U50-U100 4 GSM trunk module for SMS/Voice

The ZYCOO-4GSM-U50-U100 4 GSM trunk module for SMS/Voice  IP Phone System for GSM connection. Each port has one LED(Light-Emitting Diodes). Designed with SIM900 for global market, SIM900 is a quad-band GSM engine that works on frequencies GSM 850MHz, EGSM 900MHz, DCS 1800MHz and PCS 1900MHz.

Specifications GSM Modules:

Each port has one LED (Light-Emitting Diodes), which is assembled on the mainboard.

The Red LED indicates port status:
Solid Red = Module loading successful
Blink Red = Channel Ringing
If the LED is off, the GSM module is loading failure.
The Red LED indicates port status:
Solid Red = TE Model
The Green LED indicates port status:
Solid Green = NT Model
If the LED is off, the module is loading failure.

SIM900 Key Features

Based on SIM900 chipset, a quad-band GSM engine, working on GSM 850MHz, EGSM 900MHz, DCS 1800MHz and PCS 1900MHz frequencies, the module can be used worldwide.

Designed with SIM900 for global market, SIM900 is a quad-band GSM engine that works on frequencies GSM 850MHz, EGSM 900MHz, DCS 1800MHz and PCS 1900MHz.