Frequency: FM 433MHz
Dimension: W280 x L145 x H40mm
Net Weight: 600g
Color: White
Key: Touch 6ch
Memory Capacity: Register up to 450 call bells
Compatibility: With all Syscall transmitters and the repeater
Number of buttons: 1
Dimension: W53 x L53 x H18mm
Net Weight: 35g
Color: White, Black, Gold, Sliver
Frequency Range: FM 433MHz
Power Source: DC 3V coin battery (CR2025)
Battery Life: Approx. calling 40,000 times
Antenna Type: PCB pattern antenna
Compatibility: with all Syscall receivers and the repeater
Type: Watch type
Dimension: W45 x L56 x H11mm
Net Weight: 42gColor Black, White
Battery: 3.7V / 320mA (Li-polymer)
Compatibility: All Syscall call button type transmitters & Multi transmitter
Number of buttons: 6
Dimension: W94 x L77 x H39.5mm
Net Weight: 80g
Color: Silver
Power Source: DC 3V coin battery (CR2032)
Antenna Type: Helical antenna