Mechanical

	A50	A125
Device diameter	66 mm	125 mm
Device height	25 mm	30 mm
Device weight (air)	170 g	986 g
Device weight (submerged)	105 g	730 g
Depth rating	300 m/ 600m	600 m / 3000 m
Materials	Stainless steel 316 (back plate) PEEK (housing)	Stainless steel 316 (back plate) PEEK （Transducer）
Operating temperature	-5 ~ 60 ℃	-5 ~ 60 ℃

Electrical

	A50	A125
Input voltage	10 - 30 VDC	10 - 30 VDC
Power consumption	0.25 A @ 12 V	0.25 A @ 12 V
Power-on current surge	1.25 A @ 12 V	1.25 A @ 12 V
Physical interface	8 wires (pwr/serial/Ethernet) 3 meter cable (PUR 6.7 mm diameter) with interface module	8 wires (pwr/serial/Ethernet) 3 meter cable (PUR 6.7 mm diameter) with interface module
Indicator	Status LED (Power, Lock)	Status LED (Power, Lock)
Communication	UART 115200 baud serial 3,3V  Ethernet	UART 115200 baud serial 3,3V  Ethernet
Protocols	Water Linked API	Water Linked API

Wiring Color Code

Red	VIN	Power + ( 10 - 30 VDC )
Black	GND	Power - ( 10 - 30 VDC )
Green	ETH - RD-	Ethernet RX-
Green/White	ETH - RD+	Ethernet RX+
Orange	ETH -TD-	Ethernet TX-
Orange/White	ETH -TD+	Ethernet TX+
Brown	UART - Rx	Serial RX
Brown/White	UART - Tx	Serial TX

Acoustic / Performance

	A50	A125
Transducer frequency	1 MHz	420 kHz
Transducer setup	4-beam convex Janus array	4-beam convex Janus array
Transducer beam angle	22.5°	22.5°
Pulse Repetition Frequency	4 ~ 26 Hz （Altitude above the seabed）	1 ~ 26 Hz （Altitude above the seabed）
Sensor assist	Integrated AHRS/IMU (Yost Labs TSS-NANO)	Integrated AHRS/IMU (Yost Labs TSS-NANO)
Min altitude	5 cm	5 cm
Max altitude	50 m (Altitude > 35 meter is dependent on seabed conditions, salinity levels etc.)	125 m (Altitudes > 110 meter is dependent on seabed conditions, salinity levels etc.)
Max velocity	3.75 m/s	9 m/s
Velocity resolution	0.1 mm/s	0.1 mm/s
Long term accuracy	±1.01 % (Standard version) ±0.1 % (Performance version)	±1.01 % (Standard version) ±0.1 % (Performance version)

Pictures and 2D-Drawing

A50

A125