Quick overview from the supplier:
Ajax Wireless Security Transmitter "MultiTransmitter", White, NC,NO, EOL contact type; 18 zones
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https://ajax.systems/products/multitransmitter/
Number of alarm/tamper zones: 18
Supported detector contact types: NO, NC (without R), EOL (NC with R), EOL (NO with R)
Resistance of the EOL resistor: 1 kΩ to 7.5 kΩ
Alarm signals processing mode: Pulsed or bistable
Main power supply: 110–255 V, 50/60 Hz
Backup power: 12 V DC
Supported battery type: Battery with 4 or 7 A⋅h capacity (not included), dimensions 150 × 64 × 94 mm
Detector power supply: 12 V DC, up to 1 A for all detector power supply outputs
Protection against dismantling: Tamper
Radio signal frequency band: 868.0–868.6 MHz or 868.7–869.2 MHz, depending on the sales region
Compatibility: Operates with all Ajax hubs, and range extenders
Maximum radio signal power: Up to 7.29 mW (25 mW limit)
Radio signal range: Up to 2,000 m in the line of sight
Operating temperature range: From -10°С to +40°С
Operating humidity: Up to 75%
Dimensions: 196 × 238 × 100 mm
Weight: 805 g
