miniTag

ActiveWave's datasheet called the miniTag "our smallest available tag". It was made for small items, or for places where a tag had to stay out of sight. Its datasheet's examples include watches in a jewelry store and boxes in a warehouse.

It slept until a reader or a field generator called it, or until its own timer woke it. Then it sent its ID and other data to its assigned reader.

An optional temperature sensor sent readings on a schedule. When a tagged item's temperature passed set limits, the tag sent an alarm on its own. Its other options were a light, a tamper switch and extra memory.

Specifications

The datasheets are historical documents. Their phone numbers, addresses and e-mail are no longer ActiveWave's.

User Memory 0 - 256 Kbits

Multi-Tag Read Capability Yes

Transmit Frequency 916 MHz, 927 MHz, or 868 MHz

Receive Frequency 433 MHz

Read range (maximum under optimal conditions) Receive 30m (100 feet)
Transmit 30m (100 feet)

Power 3V Lithium-ion replaceable watch battery

Battery Life 1 - 3 years depending on use (tag has low battery detection)

Dimensions 34 mm x 32 mm x 12 mm (1.3 in x 1.2 in x 0.5 in)

Weight 11 grams (0.4 oz)

Case Material ABS (Acrylonitrile Butadiene Styrene)

Temperature Operating -35C to +50C (-31F to +122F)
Storage -40C to +85C (-40F to +185F)

Tag options Tamper Alarms if tag removed from contact points
Temperature Alarms if exceeds predefined limits
LED Blinks when called
Memory 0 - 128Kbit memory sizes available in 2x increments

User Memory	0 - 256 Kbits
Multi-Tag Read Capability	Yes
Transmit Frequency	916 MHz, 927 MHz, or 868 MHz
Receive Frequency	433 MHz
Read range (maximum under optimal conditions)	Receive 30m (100 feet) Transmit 30m (100 feet)
Power	3V Lithium-ion replaceable watch battery
Battery Life	1 - 3 years depending on use (tag has low battery detection)
Dimensions	34 mm x 32 mm x 12 mm (1.3 in x 1.2 in x 0.5 in)
Weight	11 grams (0.4 oz)
Case Material	ABS (Acrylonitrile Butadiene Styrene)
Temperature	Operating -35C to +50C (-31F to +122F) Storage -40C to +85C (-40F to +185F)
Tag options	Tamper Alarms if tag removed from contact points Temperature Alarms if exceeds predefined limits LED Blinks when called Memory 0 - 128Kbit memory sizes available in 2x increments

Quoted from page 2 of the miniTag datasheet (version 10). The datasheet gives the user memory as 0 - 256 Kbits in one row and the memory option as 0 - 128Kbit in another. This page quotes both as printed.

These figures are the original units' claims, quoted as their source printed them. Where two ActiveWave datasheets disagree, this site quotes each and does not reconcile them. A rating or a test result belongs to the original units and does not carry over to a rebuild.

Nothing on this site says a rebuild may transmit on these frequencies as they are. Radio rules differ by country, and the TigeRFID project checks them before it chooses a rebuild's radios.

The datasheet

miniTag datasheet (version 10) (PDF). This page's description comes from its first page, and the figures above from its second.

Files in the TigeRFID repository

These links open the repository as it stood at its activewave-2018 tag. Nobody has rebuilt the original hardware recently, so these files may not make a working unit as they stand.