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You've probably seen these before if you've been in the telecom space for a while, and basically what it does is take a 4G LTE signal and convert it into two standard analog FXS lines via those dual RJ-11 ports, so your old rotary phone or PBX trunk can suddenly talk to a modern cellular network without any fancy gateway software.
The sensitivity rating is better than most at -104dBm, which actually matters when you're mounting this in a basement or a metal enclosure where signal drops off fast, and the transmit power stays under 3W so it won't cook itself in a sealed cabinet—we usually see about 50 units or so per pallet, each one comes with a 1-year warranty, and the backup battery option is worth grabbing if your alarm system needs to stay alive during a power cut.
It supports IMEI change and DTMF dialing natively, which is a big deal for billing meter systems that need to send touch-tone pulses over the line, and the polarity reversal feature means your PBX will register on-hook and off-hook states correctly, though I wouldn't recommend this for high-frequency VoIP trunks where you need sub-10ms jitter—it's more of a workhorse for steady analog connections.
We run every batch through an HPLC purity check, or at least that's what our lab calls it, but for a hardware device like this the real test is the tempearture range: it'll operate from -10°C to 60°C, so it's fine for a warhouse in summer but don't stick it in a freezer, and the storage spec goes down to -20°C if you're keeping spares in a cold shed.
One thing buyers don't always ask about is antenna gain, which is >2.5dB—that's decent for a standard dipole but if you're in a rural area with weak signal, you'll want to swap it for high-gain external antenna (check lead time on that, usually 2-4 weeks), and the CE, RoHS, and FCC certifications are all current, so no customs headaches for most regions.
For ordering, we typically stock both black and white units, the MOQ is 10 pieces for new accounts, and we can do custom packaing if you're ordering 200 or so—just let us know if you need the backup battery included or separate, because some customers prefer to source their own 18650 cells.
We usually start at 100 units for first orders, but if you're testing the market we can work with smaller batches — just reach out and we'll see what we can do.
Yes, we include the CE, RoHS, and FCC certificates in the packing. They come in both English and Chinese versions, and we can also email you the PDFs beforehand if needed.
Yes, the 4G 8848 supports IMEI change. It's a handy feature if you need to match the IMEI to your local carrier's whitelist or for testing purposes.
For 500 units we usually ship within 15-20 working days. If you need it faster, we can prioritize production — just let us know your deadline.
The backup battery is available as an option, not included in the standard package. You can add it to your order, and we'll install it before shipping.
