Sim Card Considerations; Sim Requirement; Key Tariff Features; Pay As You Go Sim - Mantracourt T24 User Manual

SIM Card Considerations

SIM Requirement

SIM Size: Standard SIM (15 x 25mm)
Orientation: Insert cut corner end first with contact pads facing down.
SIM must be able to support host having only a 2G connection to the cellular network!

Key Tariff Features:

Internet Usage Costs

PAYG usually higher cost than contract per MB
o
Contract Included in monthly allowance
o
Fair Usage Allowance (5MB / day)
o
SMS Allowance

Depending on Reports
o
Call Credit

The T24-RDC does not require any air time minutes
o
Robustness

Consider dedicated M2M SIM module contracts designed for machine to machine
o
communications

Pay As You Go SIM

Top Up as you require must register for online top-up before sending out module

Alternatively Direct Debit Top up when credit goes below £5

Higher internet usage charges

Lower Internet Usage Allowance / Fair Usage

SIM card must be registered or network access is limited

Some PAYG SIMS in some countries may prove less reliable than contract SIMs

Large incoming text messages from providers can in some cases cause module freezes

Cannot tell when credit runs out other than a break in service

Only recommended for testing purposes as the stability of these SIMs is not robust
enough for remote deployment.

Contract SIM

Constant Cost when SIM card not in use with T24-RDC

Mantracourt Electronics Limited
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T24 Telemetry User Manual