Yes, if you go to Help > Settings you can change it to Bitcoin Testnet which is also known as testnet3 on sites like mempool.space

supertestnet

criptopanas

bitcoin_beginners

How to use TimeLocks?

You can use [coinb.in](https://coinb.in/) for this

Go to the top and click "New > Time Locked Address" and then follow the instructions

- Send money to the address it gives you
- Save your redeem script
- Save your private key

When the delay is over you can withdraw the money here:

https://coinb.in/#newTransaction

- Paste the redeem script into the first box
- Enter where you want to send the money to
- It will spit out a "raw transaction" which is not yet signed

When you have the raw transaction, go here to sign it:

https://coinb.in/#sign

- Paste the private key you saved earlier
- Paste the raw transaction
- Hit submit
- It will spit out a "signed transaction"

When you have the signed transaction, go here to broadcast it:

https://coinb.in/#broadcast

- Enter the signed transaction
- Hit submit
- You're done! Watch your money arrive in the address you specified