diff --git a/main.py b/main.py
index b66826a..13a234d 100644
--- a/main.py
+++ b/main.py
@@ -1,6 +1,7 @@
 import os
 import re
 import csv
+import argparse
 import urllib.parse as urlparse
 from urllib.parse import parse_qs
 
@@ -13,11 +14,14 @@ from selenium.webdriver.support.ui import WebDriverWait
 
 
 class BaseTester:
-    BASE_URL = "https://crm-dev.caat.org.uk/"
-    USERNAME = "roxie"
-    PASSWORD = ""
+    def __init__(self, user: str, passwd: str, dev: bool):
+        self.user = user
+        self.passwd = passwd
+        if dev:
+            self.base_url = "https://crm-dev.caat.org.uk"
+        else:
+            self.base_url = "https://crm.caat.org.uk"
 
-    def __init__(self):
         firefox_options = webdriver.FirefoxOptions()
         firefox_options.headless = True
         self.browser = webdriver.Firefox(options=firefox_options)
@@ -25,12 +29,12 @@ class BaseTester:
 
     def login(self):
         """ Login to civicrm so we can continue with the proper cookies """
-        self.browser.get(self.BASE_URL)
+        self.browser.get(self.base_url)
         username = self.browser.find_element_by_id("edit-name")
         password = self.browser.find_element_by_id("edit-pass")
         submit = self.browser.find_element_by_id("edit-submit")
-        username.send_keys(self.USERNAME)
-        password.send_keys(self.PASSWORD)
+        username.send_keys(self.user)
+        password.send_keys(self.passwd)
         submit.click()
 
         # Wait for the js elements load so we know the cookies are good.
@@ -40,7 +44,7 @@ class BaseTester:
         )
 
     def logout(self):
-        self.browser.get(self.BASE_URL + "/user/logout")
+        self.browser.get(self.base_url + "/user/logout")
         # Wait for the next page to load to finish logging out
         self.wait.until(
             EC.visibility_of_element_located((By.ID, "tabs-wrapper"))
@@ -57,9 +61,9 @@ class BaseTester:
 
 
 class ContactExport(BaseTester):
-    def __init__(self):
-        super().__init__()
-        self.search_url = self.BASE_URL + "/civicrm/contact/search"
+    def __init__(self, *args, **kwargs):
+        super().__init__(*args, **kwargs)
+        self.search_url = self.base_url + "/civicrm/contact/search"
 
         self.contact_selectall_id = "CIVICRM_QFID_ts_all_4"
         self.contact_dropdown_id = "select2-chosen-4"
@@ -81,7 +85,7 @@ class ContactExport(BaseTester):
         qf_key = self.get_export_id()
         data = {
             "qfKey": qf_key,
-            "entryURL": self.BASE_URL + "/civicrm/contact/search",
+            "entryURL": self.base_url + "/civicrm/contact/search",
             "_qf_Select_next": "Continue",
             "exportOption": 1,
             "mergeOption": 0,
@@ -89,7 +93,7 @@ class ContactExport(BaseTester):
             "addressee": 1,
         }
         req = session.request(
-            "POST", self.BASE_URL + "/civicrm/contact/search", data=data
+            "POST", self.base_url + "/civicrm/contact/search", data=data
         )
         return req
 
@@ -152,4 +156,20 @@ class ContactExport(BaseTester):
 
 
 if __name__ == "__main__":
-    ContactExport().test("John")
+    parser = argparse.ArgumentParser(description="")
+    parser.add_argument(
+        "--user", "-u", type=str, dest="user", help="Username of account"
+    )
+    parser.add_argument(
+        "--pass", "-p", type=str, dest="passwd", help="Password of account"
+    )
+    parser.add_argument(
+        "--dev",
+        "-D",
+        dest="dev",
+        action="store_true",
+        help="Test dev site instead of production"
+    )
+    parser.set_defaults(dev=False)
+    arguments = parser.parse_args()
+    ContactExport(arguments.user, arguments.passwd, arguments.dev).test("John")