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- Last added
- 2026-09-30
Featured CoolKit manuals
CoolKit GSA-D04 GSM/GPRS 4-Channel Switch Controller Datasheet
The GSA-D04 module is a four‑channel GSM/GPRS switch controller designed by CoolKit. It operates on four GSM frequency bands (GSM850, EGSM900, DCS1800, PCS1900) and supports GPRS multi‑slot class 10 with various CS coding formats. The module measures 23 mm × 23 mm × 2.7 mm and provides 48 surface‑mount pads for hardware interfacing.
The datasheet details the module's electrical characteristics, including a supply voltage range of 3.4 V – 4.5 V, operating temperature from –40 °C to +80 °C, and peak current up to 2 A. Pin functions, UART interfaces, antenna recommendations, and PCB layout guidelines are also provided. This manual is written in Chinese.
Covers: Overview · Product Showcase · Hardware Introduction · RF Antenna · Dimensions · Electrical Characteristics
Latest CoolKit manuals
CoolKit GSA-D04 GSM/GPRS 4-Channel Switch Controller Datasheet
Datasheet 21 pages · 663 KB · ZHThe CoolKit GSA-D04 is a compact 4‑channel GSM/GPRS switch controller module with four‑band support, low power consumption, and detailed hardware…
Which document do I need?
Datasheet
Ratings, dimensions and ordering codes, for selection and design work.
Questions answered in CoolKit manuals
What frequency bands does the GSA-D04 support?
It supports four GSM bands: GSM850, EGSM900, DCS1800, and PCS1900.
From: CoolKit GSA-D04 GSM/GPRS 4-Channel Switch Controller Datasheet
What is the operating temperature range of the module?
The normal operating temperature range is –40 °C to +80 °C.
From: CoolKit GSA-D04 GSM/GPRS 4-Channel Switch Controller Datasheet