Very well trained technician. Knew what was needed and supplied the numbers of the parts to order. Received the parts within a week and fixed the problem. Very happy customer. On 05/12/2026 by J. J. (verified customer)
I2 C/RS485, 5-Port Comm Hub, IQ 2020
Sku: 74150
$107.87
This 5 port I2C/RS485 adapter is used to “expand” the IQ2020 Controller to allow other accessories to plug into the motherboard. If you’re adding on an IQ 2020® Navigator RF Remote, Music System, Luminescence Multi-Colored LED Light, etc., you’ll need this adapter. The 4 port adapter is also available.
Note: Watkins changed from 8-port to 5-port. The 8-Port was discontinued and replaced with the 5-Port. They used the same part #74150.
This part can be found on
many Hot Spring, Limelight, Hot Spot, Hot Spring pre 89, Tiger River models from 1997 to 2025
| Ref. | Diagram | |
|---|---|---|
| # 10 | ORCA Control Box and Components (Hot Spring 2009 - 2012) | Shop by Diagram |
| # 6 | EAGLE Control Box Retrofit Upgrade (Hot Spring 2009 - 2012) | Shop by Diagram |
| # 3 | Wireless TV (Hot Spring 2009 - 2015) | Shop by Diagram |
| # 2 | Wireless Music System (Hot Spring 2009 - 2012) | Shop by Diagram |
| # 10 | Bluetooth Music System (Hot Spring 2013 - 2018) | Shop by Diagram |
| # 3 | Connextion (Hot Spring 2015 - 2018) | Shop by Diagram |
| PUG Control Box and Components (Hot Spring 2005 - 2006) | Shop by Diagram | |
| L.E.D. Light Assembly (Hot Spring 2005 - 2006) | Shop by Diagram | |
| Wireless HD TV (Hot Spring 2022 - 2023) | Shop by Diagram | |
| # 6 | 79781 Control Box 2024 (Hot Spring 2022 - 2025) | Shop by Diagram |
| # 2 | Connected Spa Kit (Hot Spring 2023 - 2023) | Shop by Diagram |
| # 9 | Control Box Orca (Tiger River 2010 - 2010) | Shop by Diagram |
| Hawk Control Box (Current) (Hot Spot 2012 - 2018) | Shop by Diagram | |
| # 6 | Limelight 2024 Control Panel (Limelight 2022 - 2024) | Shop by Diagram |
| brand | model | years |
|---|---|---|
| Hot Spring | Aria (AR) | 2009, 2010, 2011, 2012 |
| Hot Spring | Grandee (GG) | 2009, 2010, 2011, 2012 |
| Hot Spring | Prodigy (H) | 2009, 2010, 2011, 2012 |
| Hot Spring | Sovereign (II) | 2009, 2010, 2011, 2012 |
| Hot Spring | Jetsetter (JJ) | 2009, 2010, 2011, 2012 |
| Hot Spring | Envoy (KK) | 2009, 2010, 2011, 2012 |
| Hot Spring | Vista (SS) | 2009, 2010, 2011, 2012 |
| Hot Spring | Vanguard (VV) | 2009, 2010, 2011, 2012 |
| Tiger River | Caspian (CHP) | 2010 |
| Tiger River | Bengal (M) | 2010 |
| Tiger River | Bengal (MM) | 2010 |
| Tiger River | Sumatran (N) | 2010 |
| Limelight | Bolt (BLT) | 2012 |
| Limelight | Flair (FLR) | 2010, 2011, 2012 |
| Limelight | Glow (GLW) | 2010, 2011, 2012 |
| Limelight | Pulse (PLS) | 2010, 2011, 2012 |
| Hot Spring | Aria (AR) | 2012, 2013, 2014, 2015, 2016, 2017, 2018 |
| Hot Spring | Aria NXT (ARN) | 2022, 2023 |
| Limelight | Beam I (BMI) | 2022, 2023 |
| Limelight | Beam II (BMII) | 2022, 2023 |
| Limelight | Flair (FLR) | 2022, 2023 |
| Limelight | Flash (FSH) | 2022, 2023 |
| Hot Spring | Grandee (GG) | 2012, 2013, 2014, 2015, 2016, 2017, 2018 |
| Hot Spring | Grandee NXT (GGN) | 2022, 2023 |
| Hot Spring | Prodigy (H) | 2012, 2013, 2014, 2015, 2016, 2017, 2018 |
| Hot Spring | Prodigy (HN) | 2022 |
| Hot Spring | Sovereign (II) | 2012, 2013, 2014, 2015, 2016, 2017, 2018 |
| Hot Spring | Sovereign (IIN) | 2022, 2023 |
| Hot Spring | Jetsetter (JJ) | 2012, 2013, 2014, 2015, 2016, 2017, 2018 |
| Hot Spring | Jetsetter (JJN) | 2022, 2023 |
| Hot Spring | Jetsetter LX (JTN) | 2022, 2023 |
| Hot Spring | Envoy (KK) | 2012, 2013, 2014, 2015, 2016, 2017, 2018 |
| Hot Spring | Envoy NXT (KKN) | 2022, 2023 |
| Limelight | Pulse (PLS) | 2022, 2023 |
| Limelight | Prism (PSM) | 2022, 2023 |
| Hot Spring | Vista (SS) | 2012, 2013 |
| Hot Spring | Triumph (TRHN) | 2022 |
| Hot Spring | Vanguard (VV) | 2012, 2013, 2014, 2015, 2016, 2017, 2018 |
| Hot Spring | Vanguard NXT (VVN) | 2022 |
| Tiger River | Caspian (CHP) | 2004, 2005, 2006, 2007, 2008, 2009, 2010 |
| Tiger River | Siberian (L) | 1997, 1998, 1999, 2000 |
| Tiger River | Bengal (M) | 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010 |
| Tiger River | Sumatran (N) | 1997, 1998, 1999, 2000 |
| Limelight | Bolt (BLT) | 2012, 2013, 2014, 2015, 2016, 2017 |
| Limelight | Gleam (GLM) | 2013, 2014, 2015, 2016, 2017 |
| Limelight | Glow (GLW) | 2013, 2014, 2015, 2016, 2017 |
| Hot Spring | Aria (AR) | 2009, 2010, 2011, 2012, 2013, 2014, 2015 |
| Hot Spring | Grandee (GG) | 2009, 2010, 2011, 2012 |
| Hot Spring | Grandee NXT (GGN) | 2014, 2015 |
| Hot Spring | Prodigy (H) | 2009, 2010, 2011, 2012, 2013, 2014, 2015 |
| Hot Spring | Sovereign (II) | 2009, 2010, 2011, 2012, 2013, 2014, 2015 |
| Hot Spring | Jetsetter (JJ) | 2009, 2010, 2011, 2012, 2013, 2014, 2015 |
| Hot Spring | Jetsetter LX (JTN) | 2014, 2015 |
| Hot Spring | Envoy (KK) | 2011, 2012, 2013, 2014, 2015 |
| Hot Spring | Envoy NXT (KKN) | 2014, 2015 |
| Hot Spring | Vista (SS) | 2009, 2010, 2011, 2012, 2013 |
| Hot Spring | Vanguard (VV) | 2009, 2010, 2011, 2012, 2013, 2014, 2015 |
| Limelight | Bolt (BLT) | 2012, 2013, 2014, 2015 |
| Limelight | Gleam (GLM) | 2013, 2014, 2015 |
| Limelight | Glow (GLW) | 2010, 2011, 2012, 2013, 2014, 2015 |
| Limelight | Pulse (PLS) | 2010, 2011, 2012, 2013, 2014, 2015 |
| Hot Spring | Aria (AR) | 2009, 2010, 2011, 2012 |
| Hot Spring | Prodigy (H) | 2009, 2010, 2011, 2012 |
| Hot Spring | Sovereign (II) | 2009, 2010, 2011, 2012 |
| Hot Spring | Jetsetter (JJ) | 2009, 2010, 2011, 2012 |
| Hot Spring | Envoy (KK) | 2009, 2010, 2011, 2012 |
| Hot Spring | Vista (SS) | 2009, 2010, 2011, 2012 |
| Hot Spring | Vanguard (VV) | 2009, 2010, 2011, 2012 |
| Tiger River | Caspian (CHP) | 2004, 2005, 2006, 2007, 2008, 2009, 2010 |
| Tiger River | Bengal (M) | 2004, 2005, 2006, 2007, 2008, 2009, 2010 |
| Tiger River | Bengal (MM) | 2005, 2006, 2007, 2008, 2009, 2010 |
| Limelight | Bolt (BLT) | 2012, 2013, 2014, 2015, 2016, 2017 |
| Limelight | Flair (FLR) | 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017 |
| Limelight | Gleam (GLM) | 2013, 2014, 2015, 2016, 2017 |
| Limelight | Glow (GLW) | 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017 |
| Limelight | Pulse (PLS) | 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017 |
| Hot Spring | Aria (AR) | 2013, 2014, 2015, 2016, 2017, 2018 |
| Hot Spring | Aria NXT (ARN) | 2022, 2023, 2024, 2025 |
| Limelight | Beam I (BMI) | 2022, 2023, 2024, 2025 |
| Limelight | Beam II (BMII) | 2022, 2023, 2024, 2025 |
| Limelight | Flair (FLR) | 2022, 2023, 2024, 2025 |
| Limelight | Flash (FSH) | 2022, 2023, 2024, 2025 |
| Hot Spring | Grandee (GG) | 2013, 2014, 2015, 2016, 2017, 2018 |
| Hot Spring | Grandee NXT (GGN) | 2022, 2023, 2024, 2025 |
| Hot Spring | Prodigy (H) | 2013, 2014, 2015, 2016, 2017, 2018 |
| Hot Spring | Prodigy (HN) | 2022, 2023, 2024, 2025 |
| Hot Spring | Sovereign (II) | 2013, 2014, 2015, 2016, 2017, 2018 |
| Hot Spring | Sovereign (IIN) | 2022, 2023, 2024, 2025 |
| Hot Spring | Jetsetter (JJ) | 2013, 2014, 2015, 2016, 2017, 2018 |
| Hot Spring | Jetsetter (JJN) | 2022, 2023, 2024, 2025 |
| Hot Spring | Jetsetter LX (JTN) | 2022, 2023, 2024, 2025 |
| Hot Spring | Envoy (KK) | 2013, 2014, 2015, 2016, 2017, 2018 |
| Hot Spring | Envoy NXT (KKN) | 2022, 2023, 2024, 2025 |
| Limelight | Pulse (PLS) | 2022, 2023, 2024, 2025 |
| Limelight | Prism (PSM) | 2022, 2023, 2024, 2025 |
| Hot Spot | Relay (REL) | 2019 |
| Hot Spot | Rhythm (RHY) | 2019 |
| Hot Spring | Vista (SS) | 2013 |
| Hot Spot | Stride (STD) | 2019 |
| Hot Spot | SX (SX) | 2013, 2014, 2015, 2016, 2017, 2018, 2019 |
| Hot Spot | Tempo (TEM) | 2019 |
| Hot Spring | Triumph (TRHN) | 2022 |
| Hot Spring | Vanguard (VV) | 2013, 2014, 2015, 2016, 2017, 2018 |
| Hot Spring | Vanguard NXT (VVN) | 2023, 2024, 2025 |
| Limelight | Bolt (BLT) | 2013, 2014, 2015, 2016, 2017 |
| Limelight | Gleam (GLM) | 2013, 2014, 2015, 2016, 2017 |
| Limelight | Glow (GLW) | 2013, 2014, 2015, 2016, 2017 |
| Hot Spring | Aria (AR) | 2015, 2016, 2017, 2018 |
| Hot Spring | Aria NXT (ARN) | 2022 |
| Limelight | Beam I (BMI) | 2022 |
| Limelight | Beam II (BMII) | 2022 |
| Limelight | Flair (FLR) | 2022 |
| Limelight | Flash (FSH) | 2022 |
| Hot Spring | Grandee (GG) | 2015, 2016, 2017, 2018 |
| Hot Spring | Grandee NXT (GGN) | 2022 |
| Hot Spring | Prodigy (H) | 2015, 2016, 2017, 2018 |
| Hot Spring | Prodigy (HN) | 2022 |
| Hot Spring | Sovereign (II) | 2015, 2016, 2017, 2018 |
| Hot Spring | Sovereign (IIN) | 2022 |
| Hot Spring | Jetsetter (JJN) | 2022 |
| Hot Spring | Envoy NXT (KKN) | 2022 |
| Limelight | Pulse (PLS) | 2022 |
| Limelight | Prism (PSM) | 2022 |
| Hot Spot | Relay (REL) | 2015, 2016, 2017, 2018, 2019, 2020, 2021 |
| Hot Spot | Rhythm (RHY) | 2015, 2016, 2017, 2018, 2019, 2020, 2021 |
| Hot Spot | Stride (STD) | 2019, 2020, 2021 |
| Hot Spot | SX (SX) | 2019 |
| Hot Spot | Tempo (TEM) | 2015, 2016, 2017, 2018, 2019 |
| Hot Spring | Triumph (TRHN) | 2022 |
| Hot Spot | TX (TX) | 2022 |
| Hot Spring | Vanguard (VV) | 2015, 2016, 2017, 2018 |
| Hot Spring | Vanguard NXT (VVN) | 2022 |
| Hot Spring | Jetsetter LX (JTN) | 2022 |
| Limelight | Bolt (BLT) | 2015, 2016, 2017 |
| Limelight | Gleam (GLM) | 2015, 2016, 2017 |
| Limelight | Glow (GLW) | 2015, 2016, 2017 |
| Hot Spring | Accolade (AC) | 2005, 2006 |
| Hot Spring | Aria (AR) | 2007, 2008, 2009 |
| Hot Spring | Prodigy (H) | 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009 |
| Hot Spring | Sovereign (I) | 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009 |
| Hot Spring | Jetsetter (J) | 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009 |
| Hot Spring | Accolade (AC) | 2005, 2006 |
| Hot Spring | Aria (AR) | 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018 |
| Hot Spring | Grandee (G) | 2002, 2003, 2004, 2005, 2006, 2007 |
| Hot Spring | Grandee (GQ) | 2002 |
| Hot Spring | Prodigy (H) | 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018 |
| Hot Spring | Highlife (Costco) (HILF) | 2006 |
| Hot Spring | Prodigy (HQ) | 2002 |
| Hot Spring | Sovereign (I) | 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010 |
| Hot Spring | Sovereign (IQ) | 2002 |
| Hot Spring | Jetsetter (J) | 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010 |
| Hot Spring | Jetsetter (JQ) | 2002 |
| Hot Spring | Landmark (S) | 2002, 2003 |
| Hot Spring | Landmark (SQ) | 2002 |
| Hot Spring | Vanguard (V) | 2002, 2003, 2004, 2005, 2006, 2007 |
| Hot Spring | Vanguard (VQ) | 2002 |
| Hot Spring | Aria NXT (ARN) | 2022, 2023, 2024, 2025 |
| Hot Spring | Grandee NXT (GGN) | 2023, 2024, 2025 |
| Hot Spring | Prodigy (HN) | 2023, 2024, 2025 |
| Hot Spring | Sovereign (IIN) | 2023, 2024, 2025 |
| Hot Spring | Jetsetter (JJN) | 2023, 2024, 2025 |
| Hot Spring | Jetsetter LX (JTN) | 2023, 2024, 2025 |
| Hot Spring | Vanguard NXT (VVN) | 2023, 2024, 2025 |
| Limelight | Beam I (BMI) | 2022, 2023, 2024, 2025 |
| Limelight | Beam II (BMII) | 2022, 2023, 2024, 2025 |
| Hot Spring | Aria NXT (ARN) | 2022, 2023, 2024, 2025 |
| Hot Spring | Grandee NXT (GGN) | 2022, 2023, 2024, 2025 |
| Hot Spring | Prodigy (HN) | 2022, 2023, 2024, 2025 |
| Hot Spring | Sovereign (IIN) | 2022, 2023, 2024, 2025 |
| Hot Spring | Jetsetter (JJN) | 2022, 2023, 2024, 2025 |
| Hot Spring | Jetsetter LX (JTN) | 2022, 2023, 2024, 2025 |
| Hot Spring | Envoy NXT (KKN) | 2022, 2023, 2024, 2025 |
| Hot Spring | Vanguard NXT (VVN) | 2022, 2023, 2024, 2025 |
| Hot Spot | Pace (PAC) | 2022, 2023, 2024, 2025 |
| Hot Spot | Relay (REL) | 2025 |
| Hot Spot | Rhythm (RHY) | 2025 |
| Hot Spot | Stride (STD) | 2025 |
| Hot Spot | SX (SX) | 2025 |
| Hot Spot | TX (TX) | 2025 |
| Limelight | Beam I (BMI) | 2022, 2023, 2024, 2025 |
| Limelight | Beam II (BMII) | 2022, 2023, 2024 |
| Limelight | Flair (FLR) | 2022, 2023, 2024, 2025 |
| Limelight | Flash (FSH) | 2022, 2023, 2024, 2025 |
| Limelight | Pulse (PLS) | 2022, 2023, 2024, 2025 |
| Limelight | Prism (PSM) | 2022, 2023, 2024, 2025 |
| Hot Spring | Aria NXT (ARN) | 2023, 2024, 2025 |
| Hot Spring | Grandee NXT (GGN) | 2023, 2024, 2025 |
| Hot Spring | Prodigy (HN) | 2023, 2024, 2025 |
| Hot Spring | Sovereign (IIN) | 2023, 2024, 2025 |
| Hot Spring | Jetsetter (JJN) | 2023, 2024, 2025 |
| Hot Spring | Jetsetter LX (JTN) | 2023, 2024, 2025 |
| Hot Spring | Envoy NXT (KKN) | 2023, 2024, 2025 |
| Hot Spring | Vanguard NXT (VVN) | 2023, 2024, 2025 |
| Limelight | Beam I (BMI) | 2023, 2024, 2025 |
| Limelight | Beam II (BMII) | 2023, 2024, 2025 |
| Limelight | Flair (FLR) | 2023, 2024, 2025 |
| Limelight | Flash (FSH) | 2023, 2024, 2025 |
| Limelight | Pulse (PLS) | 2024, 2025 |
| Limelight | Prism (PSM) | 2022, 2023, 2024, 2025 |
| Tiger River | Caspian (CHP) | 2010 |
| Tiger River | Bengal (MM) | 2010 |
| Tiger River | Sumatran (N) | 2010 |
| Hot Spot | Relay (REL) | 2012, 2013, 2014, 2015, 2016, 2017, 2018 |
| Hot Spot | Rhythm (RHY) | 2012, 2013, 2014, 2015, 2016, 2017, 2018 |
| Hot Spot | SX (SX) | 2012, 2013, 2014, 2015, 2016, 2017, 2018 |
| Hot Spot | Tempo (TEM) | 2012, 2013, 2014, 2015, 2016, 2017, 2018 |
| Hot Spot | TX (TX) | 2012, 2013, 2014, 2015, 2016, 2017, 2018 |
| Limelight | Beam I (BMI) | 2022, 2023, 2024 |
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